Idk what to do

So I’m currently faced with a dilemma and don’t know what to do. My boyfriend drives a bus for the state and I know his schedule is kinda hectic considering he get A LOT of overtime which I’m ok with. We are finally supposed to be moving in together in April 😌 but now I’m starting to worry because I’ll go days without hearing from him until I go pick up how son from his BM then he suddenly resurfaces. I don’t want to just assume something is wrong but something isn’t right here. I’ve already spoken to him about this once before and here we are again. CAN SOMEONE PLEASE HELP? 😩 I love him and his son so much and would hate to have to walk away from them. Especially his son, he calls me mama 😩 Here’s a picture of his son/my stink🥰😘

Oh and I also think I might be pregnant with his 2nd my 1st