6 weeks pp problems :(

I had baby almost 6 weeks ago, but I had a rip right below my clitiaris on my left side lip and it had stitches but they didn't seal it so it's still open but healed. I don't want more stitches but sex hurts :( not bad but aggravating enough to put me out of the mood. Midwife put liquid nitrogen to heal it but it is still split. Any advice?