Veterinary questions? Ask a Vet for Answers ASAP
You are through to Dr Coles. I am a UK based vet. What you are describing does sound like fleas. Fleas leave behind flea dirt (faeces) which is like little dark spots through the coat. Fleas are visible to the naked eye and sometimes you can see them jump. What is the name of the flea treatment you have used? it is very important to also treat the house to get rid of flea eggs. I would advise using a spray such as indorex (aslong as you do not have birds or fish) to treat the house, as well as hoovering very frequently, and washing her bedding on a hot wash. It is important to use flea treatment regularly and as she is quite young there are limited products which can be used for her. When she is in for her vaccinations I would advise having her weight checked and using a prescription veterinary flea treatment.
Yes, that definitely appears to be flea dirt.
I would not advise repeating that treatment any more often than once every 4 weeks.
As advised, I would recommend taking her to the vet for a prescription flea treatment. Prescription medications tend to work better than ones which can be bought over the counter.