God, no. I'm the sort of person who gets anxious about everything, and I imagine that's a common experience among transgender people in general. I was nervous right up until the moment the nurse finished giving me my first shot. As soon as it happened, though, I realized there was no point doubting things, since I'd already made my choice, and when that happened, I felt a lot better. Instead of worrying, I got excited about the changes I would start seeing.