September I got a regular/normal period, two weeks afterwards I got what I thought was a normal period. Heavy at first, but then light and it only lasted three days, compared to my normal cycle which is about 6. Thought it could ve been implantation bleeding since I was sexually active and could ve been pregnant. Tested negative twice on a home pregnancy test. Still didn t believe because I ve had a bunch of pregnancy symptoms. Got what I think is a period again on Monday, but now it s ending only three days later, AGAIN. Am I pregnant or not? Or am I just having irregular periods?