I get like that too. I'm surprised my boyfriend can deal with me.
But I can't stand seeing our house messy, I don't mind if he helps or not.
Anyways, take it easy. I'd recommend buying a maternity support belt. I bought mine at Motherhood Maternity for like $38. It really helps with the back pain, I get really bad sciatic pain and it has helped soooo much!
I get like that after a do house work i do way to much my back kills me and my belly gets tight and hurts. Then i get mad at my man because he will sit there and i wont do anything until i have to say something. He.like i dont know what u want me to do. Ughh do annoying i feel u tho.