I haven't come right out and told my healthcare providers that I swing, but I am honest and they know we're not monogamous.
I want to give them a clear picture of my health. If they ask a question, give them an honest answer. You can't have optimum health unless you're completely honest with your caregiver. I'm not embarrassed to tell them either. We've all had sex. What's interesting is that Dave is usually with me when I go to my appts. Even my undercarriage checks. To tell them that we're not monogamous when we're both in the room raises eyebrows, but so what? I laugh.
Being an RN in Labor/delivery, there is nothing worse than when a couple comes in and she thinks she's in labor. You ask if they've had sex in the past 24 hours and they say no, when you know damn well they have. What the hell is so embarrassing about having sex? They wouldn't be there in the first place unless they had sex.