I feel exactly like you ABC, so I know what you're going through. With me it started in June, when I was living in my dorm over the summer. One night I was sitting at my computer talking to some people and I suddenly started feeling sick. My heart beat shot through the roof, major rush of blood to my head, feeling nauseous, dizzy, like you're about to die on the spot etc etc. First time this happened I got rushed to the emergency room because I had no clue what was happening. They didn't find anything of course, and I started wondering what could be wrong with me. My thought started flying around and I self diagnosed myself with everything from brain tumors/cancer to diabetes, brain aneurysms, brain infection, sinus infection and so on. And I highly doubt I ever had any of those things.
Anyway, as time went by over the summer I started having more frequent panic attacks, even multiple a day, and I started getting really worried. I went to a clinic to see if they could do a full blood work and I could finally figure out what was wrong. They did, and found nothing wrong. I talked to the doctor after the tests and he said it could be possible that I had some sort of anxiety disorder with frequent panic attacks, which in turn could bring on some depression. He prescribed me some zoloft in july (which I never took, because just the thought of me needing something like that seemed crazy, and the side effects scared me).
After this I basically tried to forget the entire thing and just get on with my life and suppress the panic attacks. Now, in February I finally got enough of it and I'm starting to talk with a counselor about it, and trying to do whatever it is I have to do to get over this, because this is NOT something you can just ignore and think it will go away after a while. I've tried now for 8 months or so, and it's not worth trying to let it pass on it's own. In my head, i know there's nothing physically wrong with me, and I try to tell myself that every time I can feel a panic attack coming on, but eventually that won't even work because they get too powerful. The last 8 months of my life has been a nightmare, not feeling like I'm myself, that I might be like this forever, self diagnosing myself with everything in the book just to give myself some... false relief because i feel like I know what's wrong with me. I know, it's really scary to think that something as severe as how you feel could just... be something in your head, but it is.
There have been days where I have been so dizzy, tired, nervous about having a panic attack and not feeling like myself that I haven't wanted to leave the house or even get out of bed. There's been nights I have felt so nervous and anxious I have felt like I would die in my sleep, making me stay up until the morning so I know people would find me, or would be able to help if they saw something was wrong. I've had panic attacks that have been so bad I've had 911 dialed in on the phone, lying in bed and ready to press "Dial". This is when it starts ruling your life and it causes you to be depressed as well, which makes everything you're already feeling worse.
Now, in February I'm fed up with it, and I got hard classes starting and I basically told myself that I have to end this now, before it consumes me. It feels like you're a totally different person, that you're living someone else life, that you're not in complete control of your own actions. Since summer I've had problems even putting a word on how I feel, and found your post around the time you made it. It made me realize how serious this has really gotten, and I talked to some people at my school the next day to see what I could do about it (I actually used parts of your post to describe to the counselor I was assigned how I felt).
I talked to him once and I actually felt relieved when I left his office, because I know I'm doing something about it. He also made me meet with a doctor at my school to talk about some of the medicine out there that can help battle anxiety disorders and panic attacks. I was very skeptical to medication at first, because I was worried it could change how I felt, and make me feel... not myself. But when an anxiety disorder gets severe enough that's exactly what happens, you don't feel like yourself anymore. I was given Zoloft again, and this time I actually filled the prescription. And I have never been happier about filling one in my life.
I have been on Zoloft 25mg for 4-5 days now, and the worst symptoms (the constant dizziness) is already starting to go away. My counselor told me the side effects can be pretty rough the first few days you're on it (I did feel nauseous one night but it passed as soon as I woke up), but if you can tough it out through the side effects you will usually start feeling major improvement within a month. Along with my Zoloft I'm also working on exercising along with breathing techniques as they will help regulate your heart beat and release of chemicals from your brain and help your nerves (my nerves have been totally messed up from all the panic attacks, and I was told that the chemical imbalance in your brain due to frequent panic attacks/anxiety disorder can really screw with your nervous system, which is why you can feel not yourself).
I'm not saying you HAVE to take Zoloft or another medicine like that. What I'm saying is you have to do something about this, because it's not going to go away on its own. There's most likely some underlying cause to why you're feeling the way you are, and you have to find what that is with help from a counselor or therapist.
I'm not a doctor, I'm not a therapist, but I know exactly what you guys are going through, and the first step you can take to getting better is to seek help as soon as possible. If not you can be stuck feeling like you are now, or it can get a lot worse. It really does help talking about how you're feeling, knowing that you're not alone out there. If you've had this for a while now, you're probably feeling like no one in the world knows what you're going through, that you're going crazy, that there's no hope, no cure, but there is. A lot of people are going through this, but not very many people actually talk about it, because it feels like its embarrassing for various reasons to let someone know you feel like you're going crazy.
If you want to talk about how you're feeling, how I'm feeling, got suggestions for me, want suggestions or anything at all send me a message and I'll talk to you about it.