i used to have major anxiety issues at your age as well, so i know how confining and helpless things can seem.
ive gotten loads better with time and now im pretty confident in general.
better than all the anxiety meds, drugs, alcohol and anti d trial runs (i wasnt even ****ing depressed, dont trust what your doctors gives you for anxiety) - is putting myself out there and trying to get better - no matter how bad i made a fool of myself (or thought i was) or how uncomfortable i was, at least i tried and i did it and things got less intense after a while.
hope you get better soon, and be careful with the SSRI business
oh **** im turning into valmont