One day I was complaining about my back pain, to a friend of mine who had gone through major fertility treatments (clomid, IVF) and she told me she had terrible back pain while she was doing it! I really think there must be a connection.
------------UPDATE 10/11/14: For about 3 days straight, my back was KILLING me, and I realized it was around the time I was ovulating. I have been taking Astragalus and CoEnzyme Q10 and exercising, and seriously, I had so much cervical mucus, it felt like I peed in my pants. I also felt pangs in my ovaries, which i hadn't in a long time. My hair is getting oilier. And I can't help thinking all this is a sign that I am in "Ovulation overload" of some sort. I keep thinking of my friend who agreed, when she was doing fertility treatments her back got really sore, and so did mine about a year ago when I was kind of overdoing it on the fertility treatments. For several reasons I am taking a break on actively trying to conceive right now, but I'm trying to preserve the quality of my eggs just in case (by taking the CoEnzyme Q10 and Astragalus). I like to think it's working!!!