I've been having unprotected sex for awhile now wit my boyfriend . && last month my period was on for 4 days && seem like it was off so me and my boyfriend had sex . Later that night it came back on .... Two weeks later I had real light pink discharge which turn brown like for a day then stopped that night . Came back the next morning && stopped again . Did that for about 3 days .. So today I woke up to a wet feeling it was the light pink discharge again which wasn't so heavy . I put on a pad and went about my day . Nd I notice the pink discharge stopped .!! What is happen ?? Because I haven't been in birthcontrol for about 3 years .