Chosing to « not lose $$$ » over the health of the clients is absolutely unacceptable and deserve to be publicly denounced.
Knowing that, you are welcome to use a dental dam if the risk is not one you are ready to take. You can only change what you can control, and a provider seeing you during her period is not something you control. Using a dental dam, not offering cunnilingus during your meetings or stopping meetings with providers are all choices you can make regarding your health.
As I wrote in a previous page "
Everyone is welcome to partake in the activity of their choice, with the level of protection they are comfortable with. If you are not at ease with an activity you consider risky or are unsure if playing in this industry offers you the level of comfort you prefer, it is perfectly OK to decide that seeing sex workers is not for you or to adjust your meetings to your risk tolerance. [...] Your job is to be informed, to play in your comfort zone and get tested regularly! "
About the "be informed" part, it is good to know that the mouth is not considered as an entry door for HIV when there are traces of blood in the fluids, which is why the oral transmission of HIV has not been heard of. Is it impossible? No. There's always a risk. As
@DouMan said, there can be traces of blood in your sperm. Also during penetration, it is not rare, in my case really, that small blood vessels burst. I often find traces of blood on the condom. If a cunnilingus is performed after that, it is reasonable to assume you can have some in your mouth. The chances of getting other STIs by giving oral to your partner are higher than HIV, and without the presence of blood. I'll say it again, be informed, play in your comfort zone and get tested regularly!
Your chances of getting a STI can depend the sex you're having and prevention strategies you use. Learn about the chances of getting or passing an STI using these tools.
smartsexresource.com