16 and pregnant ?

Ok so my fella and I have been together for nearly 6 mths and I've just found out I'm pregnant! I just don't no what to do. We were using condoms and were very careful and he always checked to see if they tore or anything so I just don't understand how this cud happen ! I told him yesterday and he says he will stand by me coz he loves me so much and he even wants to make a proper go of it by moving in together to be a proper family. I'm just so scared about it all and if we will cope and telling our parents ect. Are we too young for a baby ?