What am i to do

I know i need to wait and get my life started and do more schooling and a job and get married before I get pregnant I am 18 and I can feel my body craving to be pregnant I just idk I feel like I need to do something useful with my body and have someone to care for and cuddle and play with and need to support them I know its hard and need to get something stable and getting life figured out for the most part but I just don't know I have done so much research and watched so many videos on birth and taking care of babies and I have no babies and kids to be babysitting and can't have a pet of my own right now its just driving me insane I did have two miscarriages when I was younger and idk I just need some advice and maybe just some words to keep pushing me on I was mainly helping a friend raise her baby while she was doing college but she moved far away and I don't get pictures or anything of her and she cut me off for the new boyfriend so please I need some kind of help to get through this