It may just be your head a little bit.
Like when you see a spider and you get freaked out thinking that it could be on you or something. You may just want to go get a flea comb or something until you can treat him again. I am sure that he doesn't have that many fleas. Good luck. And if they were in your bed then you would probably have bites from them. Once we lived in a different house, I would foster dogs. Sometimes when we first got them they would have fleas. At one time they just took over our house. They were so bad that we had to have it sprayed by a proffesional on two occasions to get rid of them. Because when you kill them they still have the eggs and they hatched over and over again. It was bad. We still have scars on our legs from them.