On 5 march I have my period and on 11 night I get touch with my bf and he rub his penis on my vagina and his get his sperm and that time I am above and next day at 4 pm I take un wanted 72 and on 16 I get vaginal infection and on 20 days I have black discharge mix with transparent discharge that black discharge seems like blood and 1 day I have drop red discharge and next day have common discharge and after that I have no discharge but on 30 march I have water discharge it came often and pain in left lower part is there is any chance of pregnancy.