the day after sex (need advice)

So yesterday my boyfriend and I had sex for the first time, I was a virgin but he wasn't. It hurt at first and every time he would put it inside me. Me went a whole 5 rounds (11 pm to 6 am) it was so great and I don't regret giving my vCard to him. But I did wake up sooooo sore my legs are so sore I can barley walk, my vagina is also a little soar and I have back pains. Is this normal? If so what can I do to not be so sore in the morning next time