First of all you have only been on the meds a short time, in fact most Dr's will tell you that it takes somewhere between 4-6 weeks to see the effect of the medications and how it will help, that being said you are just hitting that time now.
It is probably a combination of the real work of R happening, the pain not being so acute, and the medications. Remember healing from this takes anywhere from 2-5 years. So don't expect things to be all better overnight. Don't expect yourself to feel healed all the time. The thing to notice with R, is where are you now compared to where you were a month ago, 6 months ago, a year ago. If overall things are better then great. If your spouse is making the changes he needs to and healing himself, and figuring out his why then even better.
You will still have rough days, and times, but they will become less frequent, and eventually you will realize things are much better than before. When that time comes then you can worry about getting off the meds. If you having little to no side effects from them, then allow them to help you through this.
Better living through Chemistry, as we in the medical field say.