I'm a 39 year old female who has three children; each one was conceived within a few months of trying. Our 3rd child was conceived when I was 33. I had lost track of where I was in my cycle and my husband and I did not use protection last night. I thought I had already ovulated for this month. When looking at my calendar early this morning I realized there might be a possibility that my ovulation time was right about now. I panicked and looked up plan B, I thought I needed my gynecologist to call it in only to find out when researching online it's available over the counter. I went and purchased it with an ovulation predictor kit. I took the test as soon as I got home and of course my luck, I had a positive LH surge. I immediately took the Plan B, which was about 10 hours after intercourse. Tonight I have a lot of cramping, bloating and just do not feel well. Some nausea off and on and it's upsetting my stomach tonight. What should I expect from here? I'm really worried; we do not want anymore children. Our family is complete and my husband has an upcoming vasectomy scheduled in October.