Hello me and my boyfriend had unprotected sex on Aug 11 then the next day on the 12 i started my period and ended on 16. I started spotting on Aug 24-26 it is light brown with pink it. I never had this happen before/after a period or ovulation. I have light cramps, head aches, back aches, sneezing from smells,, not very hungry, sensitive boobs, sleepy, and verry moody. Could I be pregnant?