
Hi Paula,
In all honesty you should have been prepared for all eventualities - even with an accidental mating since you must have decided to proceed with it :(
Did you count the afterbirths to ensure that all were delivered? One for every pup? Are you sure she has finished whelping? Get your vet to call in first thing in the morning
or sooner if there appear to be any problems to check over mum and all pups - he will give her an injection to expel anything left in the womb and help it to contract. He will also need to check pups for birth defects such as cleft pallaets.
She will pant heavily and probably dig quite a bit after feeding the pups - the suckling stimulates further contractions of the womb - just like after birthing pains in human mums which are similar to labour pains :( When taking her out to the toilet before seeing the vet tomorrow, keep her on a lead in case she goes off into a dark spot of the garden and delivers any other pup(s)
You should
not leave the mum and pups unattended tonight anyway - going to your own bed is a luxury that you'll have to do without for at least the next two weeks (apart from a few quick naps within easy reach of the whelping box while pups and mum are sleeping) so that you're on hand for any problems like the mum crushing or (God forbid) biting any of the pups. You have to make sure that they are all warm, dry, eating well and comfortable and of course that the mum is cleaning them all regularly to stimulate them to use the toilet (both wee and poo). Be prepared to have to change the bedding and papers in the whelping box at least a couple of times overnight - pups should never be allowed to get wet or cold and lying on damp bedding is life threatening.
Make sure all pups get latched onto the teats regularly - the first 48 hours or so is very important as this is when the highest level of colostrum comes through and the more they suckle the more production of milk is encouraged. Make sure Mum is drinking - she may not feel like food although offer it to her, preferably slightly softened and warmed. If she won't take water offer her some other fluids such as warmish weak tea or clear chicken soup.
Ask your vet in the morning if he thinks she looks capable of coping with a litter this size. Foster mums are OK in emergencies but pups are generally safer being with mum in their own home and litter on the proviso that your bitch was in optimum health prior to whelping.
HTH meantime, Teri