Havent had a period since then. My shot isnt due til sept 10, 2015. August 26 i had intercourse with my husband and hours later had a bright pinkish bleeding. Didnt have rough sex at all. The next day i had like a mucus discharge with pinkish blood again. Today is friday the third day and i still continue to have light bleeding which is a lil more then before and to me it isnt normal because i never had periods before. Why could this be, should i go see a doctor. Please help