from my research, there's no doubt the anti-depressants caused the problem. the medical community is ignoring it, they don't consider healthy libido/functionality an important aspect of your health, just that you are able to live and breath so you can pay the bills they send you. and from what i'm gathering, it's a long term, if not permanent, side effect.
Since you've been off the antidepressant for almost a month now and you're still having this problem, it looks like it may be the BP meds or the muscle relaxers. I agree with the above poster. Ask your Dr or pharmacist if either of these meds has this side effect.
I have heard of some mess causing sexual side effects. You may want to run this by your pharmacist and ask once off of the med or mess causing the problem how long it will take to get rid of the side effects. Another thought is going on the medication website to see what their side effects are if you don't want to talk to someone about it.
Good luck to you.