Am I weird for feeling nervous about starting T?

I’m about to take my first dose of T! After 4+ years of waiting for this I can’t believe I finally have it. But.. I can’t help but feel this overwhelming sense of dread and just uncertainty. I know this is what I want, so I don’t get why I feel anxious to start T, I wasn’t anxious before so why now??

I think part of the fact is just that I’m scared of change, I’ve worked hard to get to where I am now, and I’m scared if I change something it’ll ‘ruin’ it all, if that makes sense. Idk but if anyone else has experienced this feeling I’d like to know how you dealt with it starting and continuing T. Thanks