What should I do?

Hi! So let’s get straight to it. When I had my son I tore, but not my hymen, I tore right under my left labia. The doctors did not catch it after I gave birth because they only looked at my hymen, I kept telling them that it was burning when I peed and they brushed it off saying it’s normal and it’ll go away. Two days later I’m at home and just super curious as to why it’s still burning and why it’s burning as much as it was so I grabbed a mirror and checked, that’s when I saw the tear, I made an appointment with my ob and she told me they couldn’t do anything about it and that it would heal on its own. Now 3 months later it is still a very open tear and has not healed at all. Should I make another appointment? Should I give it more time to heal? I feel like since it’s been so long even if I were to get stitches it wouldn’t heal properly together.