Painful Sex

So my husband and I haven't seen each other since the end of September. With that being said, I hadn't had sex during that time, so I was SUPER tight when we finally reunited. After that first night, sex has been SO PAINFUL. When he thrusts into me it's hurts so damn bad. We did four play, so I was extremely wet when he went in, but every stroke felt like he was pulling a knife in and out of me. I wanted to cry, we haven't been able to get through one round of sex since. This has never happened before. Can anyone tell me what the issue might be?