Help!

So I am just getting over a yeast infection. I was having them back to back and I realized it was my diet, choice of underwear, and lack of water. I somehow managed to balance that out and I am going on strong!! So now I have a little issue. Near the bottom portion inside my vagina so where you would usually insert something( lol sorry I dont know the anatomy) it’s very rough. It almost feels like ridges. I have been putting coconut oil on it to relax the itching but what is it? It can’t be an std I am clean and I haven’t had sex in months?