I need help

Miranda
This hole ordeal started after my lil Marz got his first set of shots, he wouldn't eat because he was in pain but a week after we were doing well no problems and then out of nowhere a another strike and we'll have good days but I feel like crying everyday things go wrong and I'm basically alone. I do everything diaper changes, baths,play, and my bf can't handle him when he gets fussy. He'll just hand him back to me but tries to act like he does so much when we're around people but I always have to ask/ tell him. I want to keep breastfeeding, I love having that bond with him but idk how much more I can take if we don't get back on track