Painful sex 6 months after baby!

I delivered naturally but I did tear and I had to get some stitching done but due to my daughter being in the nicu I wasn't able to go to my 6 month check up and after we got hope I felt it was unnecessary to get it checked up because I had no sex life, but I recently started dating and the sex is so good, but rough and I think the tear that was there opened up again because it hurts to pee and I saw a little bit of blood with my discharge, this isn't normal right? Will I need stitching again? Some advice would be greatly appreciated!!