I need help!! I started my period October 5 (at this point I was one week and one day late). I usually last around 7 days and I'm very heavy on the first couple of days but this time I was lighter than usual and it only lasted 5 days. About two weeks after my period I started spotting. At first it was brown then turned red and then back to brown. The spotting lasted 4 days then I was fine. A day or two later I felt a sharp pain around the uterus area but it only lasted for 3 seconds. It is now almost five weeks since my last period and 5 days ago I started spotting again and it started reddish-pink then turned brown. Throughout all this time I've been experiencing headaches, slight backaches, tiredness and the thought or smell of food caused me to want to throw up (but never did.. I just ended up dry heaving). I took a pregnancy test 4 days ago and it came up negative. Could I be pregnant or could something else be wrong?