Cna pregnant?

Anyone who’s in the field of taking care of the elderly (having to do a lot of lifting, bending, all that) and pregnant or has? Is it safe for the baby? Anyone have problems or didn’t have problems? I’m just worried because at the end of my shifts my lower back heirs super bad and my stomach is so crampy at the very bottom now I’m 5 weeks pregnant and it wears me out so much already