I just had my first period?

sweetheart you are only 14, i got my period when i was 12...be thankful :) and yes you will start to develop it might take some time and certain things will change before otheres. Its an interesting process but you will start to develop...but to be honest that shouldnt be to important right now... please just try and stay in school and study and look out for yourself :) you have many years of growth ahead of you, trust me.