I think they are smaller litter, 4-5 pups. I hope you did not breed a hairless to a hairless. There is a fatal gene that can affect up to 25% of the litter. My friend has a hairless and said you can breed two powderpuffs or a hairless and a powderpuff, but not two hairless. Good luck with your litter and if you take her to the vet later in the pregnancy, they can tell you how many pups she is carrying, via an ultrasound.