What should I do?

Okay so I’ve been really wanting a baby but I’m still young and I’m about to be in my 4th month of cosmetology school, and my boyfriend is nice but lately he’s been doing things not so nice, like he’s said he’s wanted children with me but now he’s been acting weird lately and I don’t know what to do with it, like I love him but there’s things in the past he’s done and Ik I shouldn’t look that but it’s my trust issues make me think about it, but in all reality I think i should not think about it and focus on school and after everything then I should think about a baby.