Question: I am 19 years old and for the first 5 years I had normal 28 day cycles. For the past 2 years my cycles have been odd, but this one I just don't understand. I had a period on Feb. 3 (2008) and had sexual activity in February and March. My periods for the past 2 years have been 36 days on average. (sometimes as high as 46, but not often) The next period I had was on April 1, 2008. No sexual activity since the weekend of March 16th. That very same week I experienced a lot of pregnancy symptoms. I did not test due to the fact that my cycles range and just thought that maybe it was off. The period I had April 1st was kinda light and shorter (like 4 days). Now for the past 2 weeks, maybe 3, I have had some bloating, fatigue, constant headaches (esp. when I first wake up), frequent urination, I had a tiny bit of bleeding on April 28th of 2008 like I was going to start, but it never came, slight nausea (usually never vomit), and weirdly my mood has changed..backwards from normal..instead of getting mean and sad I went from being mean to being very calm and a lot nicer, and I can not stand food anymore, just being at the grocery store makes me nauseated. (oh and one morning about 2 weeks ago I had some heaviness and slight tightness (?) feeling in my lower abdominals). Could this be something else or could I have gotten pregnant between Feb and March and just now having the effects? ?