I recently went on a trip to visit my boyfriend for a few days and we had sex multiple times, two of which were unprotected but extremely brief. I started my period the first day I got there but we had sex anyways. After that, the next few days I was barely bleeding if at all. On Tuesday we had unprotected sex and I got a plan B tablet from the pharmacy, plan b one step, which is just one pill. Today is Sunday and I started spotting, more brownish, thick blood like at the end of the period. Is this normal?