My boyfriend and I had sex while I was on the 3rd day of my period and he did cum in me. Normally, we would never have sex while on my period but, in fact it was the first time. But ever since then I've been feeling just....weird. Yesterday we had sex again and he said I was extremely tight, now I'm tight regardless, he says it's like taking my virginity over and over again but yesterday I was tighter than normal. He also said it felt like I was swollen inside. I wasn't in pain at all, in fact it felt more like euphoric feeling. Could I have gotten pregnant during my period?