I'm 100% with Clay, his advice is spot-on IMHO. It sounds like you have good grounds to suspect something other than heroin withdrawal might be going on, and there's a lot of red flags to my mind (family history, personal history).
So as he suggested, write it down. Document it as clearly and as comprehensively as you can - all your family history, significant incidents from your past esp before your heroin use. Also keep a day-to-day journal of what's going on with you now. Try to include behaviours and not just feelings - stuff like sleeping probs, anxiety attacks (if you have panic-type attacks) and so on.
Even if you did not want meds, i think knowing exactly what is going on is really powerful and therapeutic. There's nothing worse than when you feel in distress, but the people who are supposed to help you make you feel like you're mistaken or imagining it. If you're in distress - you're not imagining it! And it can be very relieving to know what "it" is, and thus have strategies for managing it.
I wish you the best of luck on your quest
ae