I have been getting severe knee pain (a little above my knee cap) for the last 1 1/2 months. It comes and goes and not permanent. When I get pain in knees or my elbows it feela like I my nerves are being pulled and turned so vibrantly. Sometimes, it pains so severly that I find it difficult even to walk. I get lower abnominal pain sometimes apart from the. menstrual days.. My menses has become irregular with the earliest and latest no. Of days being 18 to 35 days. It's like this for the last 4 months.I get lower back or hip pain when I have pain in my abdomen. I feel tired and feel lack of energy too.