Last night i had sex and the condom broke. i've been on birth control for 4 months and never missed a pill. when i had sex last night, i was on my last placebo pill and my period was basically over. tonight i'm supposed to start a new pack of pills but i won't have access to the new pack until tomorrow (i'll take 2 tomorrow). i'm worried because sperm can stay inside of you for 5 days and if i miss the first pill of my pack i could possibly ovulate... could i ovulate? what are the chances of the happening? should i be worried about pregnancy?