Hi, I Had Unprotected Sex On The Third Day Of

Hi, I had unprotected sex on the third day of my period. I took the morning after pill 1 hour after sex. I know the pill has side effects, but my period stopped on the fourth day and then came back for four more. Every other day it would be heavy and then light. Am I pregnant? My vagina also has an abnormal odor and I have been experiencing cramps in my lower abdomen, nausea, mood swings, and headaches. Is that from the pill?