I really need to know wha't going on.My cycyle for this month came on the 11th and lasted for about 9 days. Now for a week, I had sex maybe two weeks prior. But for a week I have been having frequent urination, I am tired, and the last time my boyfriend and I had sex was last week, it was a quite discomforting, which is very unusual for me. I do not think it is a pregnancy because of the length of days with this last cycle Although I am 45 years old, I know it is still possible to get pregnant. Has anyone ever experienced this before? I this something that I should be concerned about?  Please give me some type of answer.