Craving sex

So last Thursday i try to lose my virginity To this boy i been on and off with for 3 years. It did work out bc every time he try to put his dick in it was painful i keep push him off of me and plus i was nerves. Now i been craving sex since that day. I realize what went wrong i wasnt really wet when he was trying to put it it that’s why it was painful. I would like to try again any advice on how can get really wet so i wont feel it ??

Plus that day my stomach was sore is that normal ?