Me and my bf were grinding and he rubbed his penis on my vagina. It was 19th day of my period counting 1st day as 1st day of my period. There was no semen discharge. Little amount of pre-ejaculation was there. There was also no penetration in my vagina.This was the 1st time we did it and only for maximum 3-4 minutes. I took unwanted 72 pill after 4 hours. My age is 24 yrs and my weight around 65kg. I am also having some white discharge (odourless) like I use to get before start of my period. Kindly help me. Is there any chance of pregnancy?