dry cracking on vag?

sooooo ........ me and my bf were having sex and wasn’t lubed up enough and he kinda cut me like a little scratch and we stopped, it was healing and fine and then i got a yeast infection and treated it the next day. ever since then it feels like the cut open up? it hurts to pee and should be healed by now it’s been 4 days. i feel like the yeast infection medicine hurt it. im also on a pill for my acne that makes me skin dry and i noticed today a little “cut” dry crack at the top of my vag where the clit is between the lips. could my meds make my vag dry to where it cracks ? what’s happening ? should i go to the gyno. i hurts so bad to pee or shower and we have stopped all sexual activities down there a week ago. please respond. please :/