Help!

I just recently lost my virginity, and well...the condom broke. I managed to get my hands on 'the morning after pill', but ironically enough I supposedly chose one of the WORST days to have sex. I talked to my sister and she charted everything it was 4 days after my period and hopefully I'm not pregnant. Not to mention I'm 14.... I'd really like some support and hopefully I'm not pregnant. Yes I know I am too young, but it was my choice and I take full responsibility. All I wanted was to do something new for a change.