Okay this is kind of lengthy but I had a feeling I was pregnant. I've been pregnant several times and just know when I am. So I took a test. It was positive. So naturally I took several and with different brands. All positive. Well, the positive started getting lighter and by this morning, it was negative and my temp dipped and my period started this morning. It was super heavy and now it's over. I'm still feeling pregnant but I know with my other chemicals, pregnancy symptoms can linger for a few days. Anyway, I took another test and it's positive again. A darker line too. What is going on?