Hi. I'm 17 years old. About 7 months ago I had unprotected sex for the first time. We used the pull out method ( which I know isn't really smart) but he didn't ejaculate. This happened on a Saturday and to be safe I took plan B the following Monday. I ended up getting my period when I was normally supposed to which was about a couple of weeks after I had the unprotected sex. Then another incident happened about a few months later. I ended up having unprotected sex again but this time he did ejaculate inside. I took plan B right away within the hour. I didn't end up getting my period for a couple of months which was really scary. I took pregnancy tests and they all came out negative and then I finally got my period. Last night, however, I had unprotected sex again but he pulled out and did not ejaculate. I'm wondering of I should take plan B just to be safe. but I've already taken it two times. Is that bad?