Overworked at 39 weeks

Apparently the topical treatment and shampoo we use on our dog for fleas and ticks didn’t work because I found fleas on him this morning. Paranoid, I checked our two cats. One of them has visible fleas, the other nothing. I’ve dosed them with a new fast-acting oral treatment and bathed the dog in a different vet recommended shampoo. I’ve been washing everything in sight, I’m exhausted and overworked and just want to collapse, but I’m scared there’s going to be fleas everywhere even if I can’t see them. Ugh!!!