Welcome to YT , and good luck with your puppies I do not think that you will have any problems with your female as long as she is in good health and your male was just a little bigger than she is . So I belive everything will be OK , accident's do happened .Just watch her very good and if something seem's wrong go to your VET.And best of luck .
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Mom to: Cody,Tina,Nicky,Joey,Miracle and Maggy May
Bandit the Chi.
Maxeen the Cat