I need some Advice. Last month my period was late by 5 days and came with a vengeance. This month it was 2 days early. My period is never ever early. It always comes on time or is late but never early. I have a 7 day cycle with heavy heavy bleeding. So it was 2 days early with very light spotting of brown/pink and a tiny bit of red. It was very minimal that it only showed when I wiped. It last 4/5 days and completely stops. Along with the spotting was a very very sore back, headaches and mood swings. No breast tenderness. I've never had this happen to me before. I tried a cheap hpt and it came back Negative. Is there a chance I can still be pregnant?