I skipped a month of my birth control pills because I forgot to pick them up. I have been on birth control for about 2 1/2 years since I had a baby. My periods are usually regular from being on the pill. So now I am about a week late on my period, haven't got it yet. I had intercourse about 3 times this month. I feel like my ovaries are sore or something. Can anyone answer to this?