My family is Catholic as well, and I came out to them a few years ago.
I think you're smart. I've read the posts you've written on here and they're all very, very intelligent. I think deep down, you know what you want, but the fear of the results are deterring you from doing what you really feel is right. Tap into that, and develop the courage to be who and what you are. You don't even have to come out to your family right away. Experiment and find out what really makes you happy. Knowing what makes you happy is one of the biggest boosts to self confidence. It will help you later on in life when or if you decide to become open about your sexuality (whether you're straight or bi or a lesbian). Just remember that whatever makes YOU purely happy is what's right. =)
Thank you so much. I'll see how far I can dig, without ending up on the other end, and hope to find the answers I'm looking for. (Smart? Not so much. You've got lovely insights on things as well. I'm glad you've got such a large, caring heart.)