So I have been injured since march from what I thought running but now I'm wondering if allll of this has to do with the fact that I haven't had my period in about a year and a half. The pain started behind my knee/upper calf area. I have barely been running since march and I have not worked out in 3 weeks. I am at a normal weight. About 2 months ago my leg started going numb when I would sit and my back started to hurt. Now I'm in constant pain on my entire left side, I've done physical therapy, chiropractic work, and I've gone to numerous sports doctors. Most of them say yes it sciatica but they can't figure out why... could my uterus or my irregular or lack of period have something to do with all of this? I guess I wasn't think that they could be related but now I'm not so sure.... thanks!