I was leery about certain things at first.. Then when I realized that you can spread germs from sharing the same straw.. I kinda stepped back.
The best advice that I have ever received is -
Never go out of your comfort zone.
Find a birth control that suites your body and lifestlye.
Get tested and just be honest with you obgyn. By being honest doesn't mean you have to confess your source of income.. But let them know that you have an active sex life. Be it a porn star or a swinger or whatever makes you feel comfortable.