Im on birth control and I had missed a few pills towards the beginning of my pack.After unprotected sex I took plan B just to make sure. A few days later he finished inside of me again and I'm not sure whether I should take plan B again or not...

I'll suppress the urge to lecture you on using birth control properly. o_O

Were you taking your pills again when this happened the second time? Birth control pills are not 100% affective, so there is a chance you could become pregnant this time as well. Its up to you if you want Plan B again, but it could have serious affects on your body to take it so soon. Its hard to give you an accurate response though, not knowing your health history as your doctor would. I suggest calling the doc who gave you the BCP Rx and ask their opinion.

Hi, I would suggest that u seek a doctor's help, Birth control pills doesn't work always. I did got pregnant once even I had taken pills. Also pills may do various kinds of harms to body. U may also notice that women who have got no children don't rely on pills whereas women who have got children can rely on pills. So pills may have adverse effect.