hi, i am 18 years old nd i have sex with my boy friend on 16 november with protection and i have my periods on 18th november after that again i have sex on 26 november . co-incidently the condom teared up and he ejaculated in my vagina this time ,after that i have taken ipill within 1hr. after that again i had sex on 2nd dec.after that on 3rd dec i have some little vaginal bleeding for 5days which do not seems to be my period..i think that bleeding is due to the pills i have taken.. again on 19 dec we had sex that time he has used condom but he forced me to take an ipill as he dont want to take any risk. i had sex with him last time on 21dec with protection .. i always have my periods around 20th of every month.. but this time its 24th and still i dont have my periods .. i am really worried and really dont know what to do. can i get pregnant and if not when i will supposed to have my periods?? please help