I would strongly recommend you talk this through with a therapist and work through all the potential scenarios and how you might feel about them. I think you need to ask yourself what kind of response you're realistically likely to get, what you're expecting and why. All too often, families don't respond the way you want and it can end up being more hurtful.

I can't speak for your family, but in mine... these things were not so secret, and people did know, and realising that has been very hard.