Well, you are the first with the little girl undies! I have tried the little boy undies too, but the size was too small and I never tried larger.
I do want to caution you to watch your girls very carefully when you are using something to control the mess and protect the female...I used the commercial undies for Lexie and she went out to potty in them! I discovered this right away and took the undies off and changed to another, new (clean) pair...well, she got a HORRIBLE infection...she was miserable and I was not able to breed her...which I had planned to do.
Fortunately, Lexie has long heat cycles and the vet was able to treat her with meds that would not harm the puppies and we were able to let her breed on that cycle. We had a healthy litter of puppies, our first litter!
But now I don't use any undies...she got really sick.
About the heat cycles, how long after giving birth was the first? The second?
Lexie has heat cycles about every 4-5 months, but since she had her litter in December, she had a heat cycle in May, but is acting like she is starting another cycle. Soooo, the short answer is that I don't know about your girls heat cycle...but I do know that sometimes you get a rare girl that cycles early and often.
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