I had my last period about three weeks ago (I think. It's been at least two weeks x.x). For the past week I've been having headaches (probably not related), and the other day I felt like my period was coming on (cramps, slight nausea). Well when I checked, there was only a light spot of blood on my undies, and I haven't bled anymore since. I've felt slightly nauseated at random times during the past week. My moods haven't really been consistent either (while that's kind of normal, I've been feeling like crying more often). I did take a pregnancy test on Thursday and it was negative. I have been having unprotected sex with my boyfriend. I'm just wondering if I might have taken the test too soon or if I just shouldn't worry about it.