My cycle is a normal 28day cycle.. I've always been on time. Today however, at 11dpo I started spotting very light pink & I thought it was just my period coming. I put on a pad & went on about my day. My flow usually comes full force, but it's nothing in my pad except for 3-4 small half-dime sized brown spots.. just looking for advice to see if this could still be my period or if I should see a doctor. Any input would be appreciated.