My boyfriend stuck his pernis in my for like thirty seconds a week before my period and we we're afraid his pre-cum got me pregnant. so a week later i started what i think is my period, but it keeps starting and stopping. when it started it was light for one day, then it got heavier for like three days and then stopped, then started up a fewhours later at a meduim flow, now it has stopped again. do you think im pregnant? when could i take a pregnancy test? do you think that implantation has taken place? let me know if you need anymore information. thanks