confrused??

I had unprotected sex on the 6th the day that my period went off and my fertile week on the 9th in the beginning he didn't use a condom then after a while used one he cum.in the condom stayed in for a little then pulled out on the 10th I had a pain in my side then it went away then I had a headache that came and went and i been having headaches that come and go since then and I'm constipated and more tired and my stomach been feeling funny ,my taste buds changing is it possible to get pregnancy signs this early?