WHAT IS GOING ON WITH MY BODY?!?

So I had a miscarriage back in late November early December of 2017. My periods are very irregular now and It’s been 6 months since my miscarriage. My period two months ago was a week late, and my period last month was two weeks late. This month my period was THREE weeks late and I just started it today. I’m having severe cramps and bleeding. I’m still having those clots that looked like part of the Gestational Sac. I didn’t have a GNC done because my doctor thought it would all pass regularly. I’m in so much pain and I just don’t understand what is going on with my body. My husband and I have been trying for 5 months now (ever since we got cleared by the doc). And NOTHING has happened. I’ve been taking prenatals and everything and I just don’t know what to do! I’m super hot at night and have to sleep with a fan on. We have to keep our house pretty cold at like 65*. Has this happened to anyone!? Is anyone else going through this??