Yeast infections can result in sores in the vaginal tract, so if you still have an infection or if the sores haven't adequately healed, yeah it's going to hurt. Do you still get bright white, chunky discharge? Or do you have any discharge?

Something else that can result in cuts and sores - low estrogen might dry you out, so if you're a very thin girls/if you exercise a lot, that could be a reason why you can't get adequately wet. Getting fingered while you're dry as the sahara might cause some abrasion and pain, of course.

If it's yeast, you'll need a single-dose of fluconazole + breathable cotton undies + probiotics + no sex until healed up. He might need to take it too since yeast can be transferred through skin contact.

If it's low estrogen, you might need to up your cals and chill out with your exercise regime. If you've been stressing a lot and you feel pressured to 'perform', that's gonna kill anybody's libido too. Does your bf know you're hurting? It'd be helpful for him to know and be more sympathetic towards you. He'll need to leave his ego at the door, pressuring isn't gonna coax an orgasm out of anybody and if you're busy - you're busy. And he needs to get that.

Lube goes a long way, but only after you're yeast-free.