Hi Mandw,
I think most of us have asked ourselves that same question throughout the years. It is not an easy "thing" to deal with or accept initially.
Going out and putting "her" on hormones is maybe not the wisest choice to make. The effect of hormones are pretty much permanent. I am talking about breast growth.
Maybe you should, as Amazon has mentioned, allow yourselfsome time to sit and clear your mind first. Nothing is as devastating as doing something that you have not properly thought through, only to discover somewhere down the line that you have made a grave error just because you did not think things through properly. Keep reading through the posts, and you will find many stories about people who were unsure about their own self but decided to dive into the deep end just because they were unsure of what or who they are. Lots of posts about detransitioning here on Susans!
I always hate seeing girls going all the way with hormones, only to change their mind at some stage.
You mentioned that you don't like being a girl, so why would you want to become a girl if you do not want to be a girl???. I just can not get my head around that one. "maybe I will get used to it" is totally the wrong expectation to have.Ask yourself whether you will truly get used to it, especially considering the fact that you do NOT want to be a girl. If you do not want to be a girl, then why go out of your way to become one??
Have you considered just cross dressing? Why don't you try that for a while? You can always take the girl clothes off at the end of the evening and be a boy again.
I am not preaching to you (well, maybe I am in a way)but I hate seeing people getting hurt because of hasty decisions.
Have you considered seeing a gender therapist?
Please feel free to chat to any of us about. We always have a willing ear. We can possibly give advice, but at the end, the decision remains yours and only yours as to what you want to do.
Oh, by the way, you are not crazy!

Lotsa huggs
Maegan