I agree with others here that your err was in bringing guys into the house. You are the guest, and that is an invasion of their privacy. Even when I am staying with other gay friends, I don't bring guys into their homes. I had a gay friend visiting me here who stayed for about a week, and even though he is someone I had sex with and also played with other guys with, I was pissed off to learn that he had posted messages on Craigslist and had guys over to my house while I was away at work. (I had other friend who told me that they saw the ads).
The issue is that we all draw the line in different places over what is acceptable for ourselves, and then apply that same standard to everyone else. Few people are able to appreciate that someone else's line may be in a different place than their own, and that this may be ok for the other person even though not something they would do themselves. My ex, for example thinks it is risky just picking up a guy in general who he doesn't know, nevermind the risk level of the sex. I personally draw the line at drugs. I think that is unhealthy for me, but don't judge others who want to include it for themselves, though I for one I don't want to be around it.
Now this is not to disregard the lines that others draw, and should look at their views sometimes to help us reevaluate our own, but then to make our own choices for ourselves. It sounds like you may actually question some of your own choices, apart from what your family thinks, and that is good to do. That is great that you are even seeking a professional to discuss it with, and while they may be a little less judgemental, they too will draw the line somewhere. They will probably ask you to consider if you are hurting yourself with your behavior. And even that is a challenging question.
But to your family, the cat is out of the bag, and so if you want to keep a relationship with them, you need to address it. Perhaps apologize for bringing strangers into the house and admit that was wrong. You don't need to divulge everything that you did with them and you can say that. It is enough to acknowledge that it was wrong to bring them into the house period. You may choose to share that you acknowledge their concerns for your behavior, and that you are actually seeing a professional to seek advice on it (notice I don't like to say seeking help - as it is not clear that you need help. But advice is a good thing.)
In the end, it's about you being comfortable with the choices and risk that you take, and with the possible consequences of them.