Whoa boy... Yes, you should take her to the Vet since she is whimpering and not eating. Nutrition is very important to her and the babies. Yes, you will have to be there when she delivers, as she may need help. 4 lbs is pretty small to be breeding. I cannot stress how important spaying is. Females in heat can and usually do, get pregnant, as you now know play dates are not a good way of a planned breeding. Gestation is 58-65 days. Most average 61-63 days. You have 1 month left to learn all you can. Hopefully your Vet is helpful, search the web, and read all you can. The babies and your female's life are at risk if anything should go wrong, (and often does).
Fingers crossed for a trouble free whelp!
__________________  Deb Sillers
816-261-8734 Cell |