You can go to your local health department for information on routine STI / STD testing You can talk to your primary care doctor about routine STI / STD testing Centers for Disease Control & Prevention Search Directory if you are located in the United States of America or a U.S.A. Territory — Learn More Here [...]
STDCheck.com: What’s the difference between an STI and an STD? — Learn More Here Centers for Disease Control & Prevention (CDC): Sexually Transmitted Disease (STD) — Learn More Here World Health Organization (WHO): Sexually Transmitted Infections (STIs) — Learn More Here
“Foot” or “foot play” typically in the butt-play community refers to the act of one placing part or all of their clean, sanitized, and protected foot inside of one’s anus. See TIPS here for more information.