Relationship issues

Ok so we have been together for years we are engaged to get married we have a child and are ttc#2 and these past few weeks well around a month i just cant stand him hes doing things to wind me up constantly.. hes spending money on himself and leaving me to pay the bills when i get atleast 300 less than him a week. I buy the babys things etc.. ive tried talking to him but he says its his money and he deserves to treat himself. I cannot stand to kiss him or anything. But i love him so much and i dont know if its just a phase in going through. He works nughts so the weekend i figured we could go out as a family but instead hes planning things with mates. Like right now we are stopping over at my moms house to look after my little brother hes slept all day leaving me and our baby to have fun on our own its now the night time and instead of coming to bed hes playing xbox with my 15yr old brother like wth... and the worse part i think i may be pregnant again. Is there anyway u think we could work this out id be heartbroken without him but atm it seems i feel that way with him....