What to do? In your current state of mind, I suggest seeing a therapist. Maybe find one who is "trans-friendly" without being specialised. So no one needs to know, and even if they learn it, invent a reason if you don't feel like coming out to them. For example, a death you haven't fully overcome yet, or stress...
Clarifying your thoughts, feelings and intentions with yourself is the first and most important step. Don't even think about family and friends for now; if you're actually not transgendered, they never need to know. If you are, well, think about that later; just tell yourself that it often goes way better than you imagined. A surprising number of people actually keep their marriages and families after their transition. But that's irrelevant for now. Investigate this yourself with a professional therapist before complicating matters with coming-outs.
Good luck.