Hi. I am really confused about what is going on with my body. I had an IUD for about 3 years. I had it removed in early September 2011 and my period came at the end of that month. I had unprotected sex in early October and my period was late it didn't come at the end of October but did early November and lasted for 3-4 days. I haven't had sex since that October but my period for December didn’t come. I have taken about 14 pregnancy tests since that late October, November, and January it all came out negative. Finally my period came on 31st of January but it was light and only lasted for 3-4 days. I have always had regular and heavy period until this started happening. I don’t think I’m pregnant and I don’t have any plans to get pregnant. What puzzles me is that I have been feeling bloated and full all the time, nauseated, sleepy, and I feel this twinges/pain in my lower abdomen and uterus that come and go. Has anyone ever experienced something like this before and what happened?