Should i stay or should i go?

ok well i got pregnant at 16 and now im 17 and i have a boyfriend who is very imature, every time i ask him to watch the baby he dosent, im so stressed out cuz im constantly watching the baby while he gets to play around.he dosent help for ****, like we needed baby food for the baby but he blew his money on a 300 dallor phone. so i had to go to the pantry to get baby food for free. he dosent understand the word responsiblility and now i have to get a job cuz he wont help me out, its not fair cuz all the money i get i spend on the baby, i mean dont get me wrong i do love this guy but he wont even let me check his phone cuz in da past he cheated so i worry most of the time. we dont live toghther so he gets to go home and get a good night rest while im at my house up at night with the baby. IM SO STRESSED i dont know what to do cuz i want to be with him but it just seems like im better off without him cuz he dosent help me 4 **** and he treats me like ****. unno should i hang on this rocky road or should i split and try a new route??i just wanted to stay toghther so the baby would have a family and not a broken home.