6 months postpartum & painful sex

Hi ladies. I am 6 months pp and am still experiencing very painful sex. I did have a 2nd degree tear, but everything I’ve read says that should all be healed by now. We’ve tried lube, taking things really slow, and nothing seems to be working. It is okay upon initial insertion, but anything deeper is horribly painful. The best way i can describe the pain is a bruised/tight feeling. I’ve read things online about women needing to be restitched, and now I’m freaking myself out. Does anyone have experience with this? Or know someone who has? Help...please!