I had unprotected sex like in September. My bf and I didn't finish but I got scared and I took plan b. Now I know that by taking plan b, your period will be a week early or a week late. My period still didn't come yet. I'm having a feeling that i'm gonna skip. Now today I just had protected sex and usually when I skip my period, it usually comes on the first day in the next month. Since I just had protected sex, will my period be delayed? If so how long? I have a homecoming dance that's this Thursday. Will it come that day? Before that? Or like a week later? Sorry I'm just really nervous.