 [ Symptoms ] 10 days ago me and my boyfriend grinded in car i took a pregnancy test today can i trust it  we were grinding in the car and he had a thick pair of underwear on and i did not he swears nothing came through but im still worried i took 2 pregnancy tests today 10 days after incident and it came back negative my period is due this week or next can i trust the negative results [ Disease ] hi if you do not get your period try then but missing your period could be from stress but if you do miss see your doctor for a blood test for pregnancy this would show yes or no ok good luck