18 And Want A Baby....

Im 18 going on 30 im super mature and everything for my age. Ive beeen dating the same guy for about 2 years now we know everything about each other we went through the whole " i might be pregnant" bit after not using protection... i wasnt but i have to say i really wanted to be. ive always wanted children lots of them as many as i could have naturally. i was kinda bummed and cried after taking the test and it was negative... i didnt let him know i was upset i pretended to be relieved. i really want a baby, i want to feel them kick inside me move around and know im their protector. and that im their mommy ive always wanted to be called that. i feel like i was forced to grow up early and that ive been a full grown adult for 5 years but he doesnt feel like he is quite ready i  dont know should i leave him and marry another great guy and have a family with him sounds harsh i know but is it even worth it we dont have the same goals or aspirations at all anymore.... i feel like hes completely detatched and we cant even have sex with out protection and he double checks to make sure i take my birth control pill. and he uses a condom and pulls out even with the condom..... hes super on edge about a baby.... i dont want it to be like that i want a little child so badly... im willing to move on from him.... help me decide what to do please? ?