I understand what you girls are going thru. Im not here to judge or criticize for you, I know exactly how that feels. I felt that way too when I was 17. Im 21 now and still feel that way. Its Like you need to feel needed and wanted and loved...because you feel you serve no other purpose in life...right? Its perfectly normal to have this feeling to mother a child. I too have had a really tough life, even tho I didnt raise my siblings. My mother, on the other hand, was in the same position as you. She mothered her siblings. I cant tell you how many stories or times she tells of how she had no choice but to grow up, and how she missed out on her childhood. I know...you dont like to party or hang out with your friends, thats a good thing.
Instead, why dont you just prepare for a baby. It takes a lot of time! Do what everyone else has been saying. Dont rush into it so fast...prepare yourself. Get married first, get your degree first, get a house first, SAVE MONEY!!! ppl are expensive

...theres so much to do before a child should enter this world. We are not calling you immature so to speak, its just that we are ppl that are actually experiencing the REAL WORLD...and its crucial. Do you really plan on living with his folks forever? Dont you want some privacy and dont they want some privacy? How about you just baby sit and work in childcare for a while...while ur getting ready. PLEASE just have an open mind to what all of us are saying...we are the real deal telling you how it really is. Also...maybe just maybe..the fact that you cant conceive right now is a sign from God that you arent ready...? Something to think about

Good luck to you sweetie