i recently got off birth control, in october of last year 2009. i wasn't very smart with my choices and had unprotected sex with my boyfriend (same partner for 2 years, no history of sexual diseases) many times and ended up taking the morning after pill around 5 times within 2 months. my period has been regular this entire time. my last period was also right on time, on january 18th however i have completely missed the month of february and still haven't gotten my period right now. i am still waiting on march's cycle to come and i should be getting it vvery soon, sometime this week. should i be worried? or is this normal because of the excessive amount of hormones i've put in my body. please advise.