I had unprotected sex 2 weeks ago, and took plan b a little over a day after it happened. I have been on birth control for 3 years but stopped taking it for a few weeks in the summer. I have consistently been on it for a month prior to having sex. I don't think the guy ever finished, but I still took plan b to ease my mind. I got my period about a week later and it was heavy enough to use a tampon for a few days, but now I feel super bloated. should I be worried or is it just side effects?