Don't hide away! It's annoying that anti-depressants aren't an option for you, but there are other ways. Biofeedback is excellent it really helped me. CBT or cognitive behavioral therapy is also of great use. If you're seeing a psychologist they can help you with this.

I don't want you to feel alone.. Stay as strong as you can. Whilst I don't believe it myself, everyone else tells me there is joy and hope in life. I hope dearly you can find those qualities in your life because it just isn't fair what we have to go through with this stuff