Michael Douglas blamed his throat cancer on all the oral sex and partners he had and HPV. He must have had loads of pussy when he was younger and they probably weren’t WGs.
Before I respond to the OP, I have to deal with this. HPV is only seen in some oral cancers (esophagus) and it's so far only been associated with better cure and survival rates. Honestly, we don't know why. I don't know why. Especially as the tissues between gential and oral/esophagial are very similar. But HPV makes cancer worse for cervical and anal cancers. However it has the opposite effect on oral cancers.
It doesn't cause oral cancers, it's only found in the minority of cases, and is linked with the cancer being significantly less aggressive.
Now to OP. The main things you are at risk of on giving RO are syphillis and herpes. Syphilis is very rare among women. 70% of people have herpes orally, so can't get infected again. About 10 to 20% of people have genital herpes, so it's much less common, however it's important to look for signs of it. After that we're looking at gonnorhea, then chlamydia.
HPV we have no records for, swabs won't detect it, only tissue biopsies. HIV there's been no report on RO ever being a transmittable risk. Nor OWO.
The mouth is generally inhospitable to STDs, however, it can occur especially with herpes and syphilis (when outbreaks are occurring in the case of herpes, otherwise it's a 3 day shedding period in a year). With chlamydia and gonnorhea the risk is harder for scientists to judge, it almost certainly could happen with the right circumstances, but the numbers right now aren't appearing to be able to give a percentage risk.
That said, if something looks, smells, or tastes funky, don't continue staying down. More likely it's BV which you can't catch. But could also be thrush, which you can get orally from RO. Others are harder to say as numbers aren't really there.