Hi there kiddo - great to have a Mohammed here
Almost triple your age and I was never a believer. In anything. Perhaps except humanism.
Keep your name. For the first - it is you. You are Mohammed. Well, perhaps not THAT Mohammed 1400 years ago (thank our non-existing god(s)). But YOU Mohammed.
Secondly. How badass is it to reply:
So Mohammed - you're Muslim?
*Puts on sunglasses*
I can't remember where I saw it, probably here on the forum, but it was something like a Jordanian atheist asking if he should change his name since it was somewhat puzzling for people that he was given the name of "Abdallah bin Islam"