I have two 3 month old kittens, got them a month ago. One boy and one girl both very lively,they both had all their vaccinations,but the last 3 to 4 days the female kitten seems to be getting more and more lethargic. Her little ears are turned down on the ends, is eating and giving her water in case of dehydration. Don't have money for vet can you help?

For vet possibilities, check with a local animal shelter. Often shelters give out certificates for vet care and know which vets have discounts, etc. Or call vets in your area to find out if they will do some kind of payment plan or even a bartering exchange.

Hheath is our Cat Expert and may not see your question until Friday or Saturday. Check the following links to see if any of these symptoms fit --

Feline Distemper Symptoms (Panleukopenia)

http://cats.lovetoknow.com/Feline_Distemper_Symptoms

At least call a vet and find out if they will answer some questions for free over the phone.

Cats like to hide their illnesses, so if your cat is slowing down it may be an indicator that something is brewing. Kittens, especially at this age, can go downhill very quickly.
Is she otherwise acting okay? If she's otherwise acting normal, I would spend the next few days watching her, and gathering up extra funds. If at any point she stops eating, has diarrhea, gets lethargic to the point she isn't really doing much of anything, then you need to take your cat to the vet.
Owning a cat comes with responsibilities like these. It is something you perhaps should have thought more about before you acquired two kittens.