Hello ladies! I started the pill one week ago. Two days before I started I had unprotected sex. He did pull out but for the past two days I have been feeling very nauseous. Especially in the morning but not limited to the morning. I have been a little constipated, tired, and cramping the slightest bit. Are these side effects of me starting birth control or possible signs of pregnancy? And can pregnancy symptoms occur one week after the unprotected sex? Thanks ladies.