My panic attacks are getting worse

have a panic disorder and since I have started college it has gotten steadily worse. I'm a junior and at this point I amafraid to go to class on Tuesday and Thursday. I don't know why I had one negative feeling in that class and I now I get scared every time I think about going.I just want to end it all at this point. I see people who are happy and go thereand I am scared just thinking about leaving my front door. I started medicine at the beginning of the semester that just made me want to sleep. I would sleep all day and lost all emotion or feeling for anything. I ended up alienating myself from my friends because I no longer felt emotional toward anybody. I ended it cold turkey so I could focus and wake up but now my symptoms are worse than ever. I just am afraid of people now. I get scared at the thought of being surrounded by them. A few months ago I loved people and hated being alone. I had to withdraw from 2 of my classes and now taking only 10 hours. Yet I am still too scared to even check my email because I know it will just be bad news and I don't think I can handle that. I used to bypass that by going directly to my professors rather than emailing them but now I'm too afraid to leave. I had friends who would help but now they eye me suspiciously like I'm crazy. Now I have become a recluse please what do I do?!