My dog is due on the 17th of July and she has fleas terribly. We have bathed her and washed her. But they are back. We cleaned out her pen and put fresh bedding in it but it doesn’t seem to help. They are small black bugs and I am worried that they will harm her and her pups. I need advice fast. Every flea product I have looked at isn’t safe for pregnant dogs. So what the heck am I supposed to do with the little devils? Please any and all advice will help me and Oreo.