About 6 days after I had unprotected sex, I started what I thought was my period, but it only lasted about a 1 day and was very light. Could it have been implantation spotting? Or would it have been too soon? Also, I recently noticed white-ish vaginal discharge, and my breasts are getting really sore. I m also tired a lot. Maybe I m just overthinking. I m on birth control, so my period has been coming at different times every month. Could I be pregnant? Help. ):