Bras/boobs

Ok so seriously weird question. Would you consider using a pregnancy belly band as a sort of bra? If youve done it does it work? Im running outta options i wear an i cup and bras are so damn uncomfortable, i keep falling out of them because i just cant find ones to fit right, the dig into my sides, or under my boobs, i work in a church nursery so cleavage is a big no no, i loathe bra straps ugh i just wanna be cosy and not have my boobs flopping around haha