Vaginal health help?

So me and my bf are having sex, and he goes to shower and notices that he has white powdery (not clumpy) stuff on him. From me. I’ve tried looking it up but google keeps saying a yeast infection and I know that’s not it. I’m not burning or itching and I’m at a dead end as to what it can be. I don’t have the money to go to the OBGYN rn and no I’m not trying to get a diagnosis online but maybe some advice if anyone has had something like this happen. My discharge is normal and white creamy/clear (it goes back and forth) on underwear so this only happens during sex....this is so embarrassing