Help me please

I’m 9 weeks PP on Saturday. I had a first degree tear and have stitches.

Me and my husband had sex 2 days ago for the first time, if didn’t hurt st all and it felt like before I gave birth.

I have just have s little little look down there and s feel to make sure everything is okay and I think my stitches have come undone. Don’t even know if its possible. Nothing hurts st all down there but there is a gap st the top. The are is external and on my Labia, when I touch the gao it stings s little but I have had no pain at all to suggest it’s torn or anything. Don’t know what to do about this at all? It doesn’t look bad st all and it doesn’t hurt. I have no idea how long it may have been like this for though?

Any advice welcome