Pain, please help

So, I started my period and it was going pretty normally, I had sex about two times during my period. Randomly I started getting like cramps (on the last day of my period so I thought it was because of my period) but they were way worse than normal, different than I’ve ever felt. It goes away and I begin to have intercourse but I had to stop because it hurt so bad when my boyfriend hit my cervix. It made me jolt. So we quit. Fast forward to the next night, we try again and it’s not any better whatsoever. He actually hit my cervix (penis wasn’t even all the way in) and it made me jump and whimper out in pain. One of the worst pains ever. What could this be? Is my cervix bruised? Or? I’m super worried because I want to be able to make love to my boyfriend but I’m in pain. Any advice would be greatly appreciated.