Gary! Yes, you can acquire regular STDs like herpes, clamydia, gonorea among others. HIV you have better odds with the lottery. Have this in mind, you have to make sure you don't brush your teeth or floss at least a good hour before attempting to eat some pussy or suck cock. I am bi so I had to say that (sorry). When we brush our teeth or floss the gums become delicate and often times bloody so there is an open wound. HIV would have direct contact with your blood stream. Hope this helps you out. Lastly, these women do this for a living and they go through a lot of men some type of commons sense also kicks in they don't want to catch anything either so some precautions I am sure they take. You can't be 100% sure but at least it's something.
Good Luck and happy endings.
Semper fidelis
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