I have taken 150 mg Venlafaxine (Effexor) for most of the last 2 decades which usually keeps anxiety at bay, which is my main problem. But of course it, long most of the others, leave me with little erections. Now I just discovered Mirtazapine (Remeron) which doesn't have a sexual side-effect, so I have been slowly lowering my Effexor in order to switch to see if it works for me. For you, since you experience some physical pain, I would definitely ask the doctor for Gabapentin. I take 60 mg tabs twice a day. You could take it 3 times a day. I definitely feel the difference within 15 minutes. Gaba is one of the neurotransmitters that is needed to uplift your interest in life. You can even get it in capsule form at health food stores. This method does create quite a jolt within 5 to 10 minutes and can kind of take your breath away when it kicks in but that rush lasts maybe 15 seconds and then you just feel happier. There also numerous other natural remedies in combination that you might look into that would not have the sexual side effect prescriptions have.