If she's pregnant, there's very little you can actually use on her as it will be absorbed by the fetuses also. Frontline is safe for pregnant cats. She may have a food allergy which is fairly common in cats. Try putting her on a food that does not contain corn, such as Wellness, Innova or Felidae. That will help if the problem is a food allergy. You can also get some Microtek Spray at most pet supply stores or online at
www.revivalanimal.com and use it on her. It will kill many bacterial and fungal problems as well as relieve the constant itching. I would use the frontline on the off-chance that she DOES have fleas but you just don't see them because she is overgrooming and getting rid of them quickly. Cats that have flea allergies are extremely good at getting rid of them.
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Lori McLaughlin
Your veterinarian should ALWAYS be consulted first and foremost when your pet's welfare is at stake.