Please do not give up, there are different meds that can agree with you. It's not uncommon to get frustrated, but do keep in touch with your pdoc and/or therapist.
It's also not uncommon to doubt diagnosis, it takes time, and perhaps, getting a 2nd opinion.
Denying yourself of treatment, can cost you wasted years and anquish, it's not worth doing this to yourself.
You are young (I wish I was) and have so many opportunities though at the present time they may be hard to see.
Staying with a treatment plan, regardless if adjustments or changes in meds are needed is worth the effort.
Don't give up on yourself,meds and treatment. Many of us "elders" can tell you from our own life experiences, it's hard but what you think is impossible can be possible, just keep patience and hope. It can be possible to keep this disorder under control.
Please take care,
DE