>got the fone call to take bitch on these dates,
but was this a guesstimate of how the season would progress or had you got a result saying she had actually ovulated???
Example you test and the levels show approaching ovulation. the average bitches levels double each day so a guess can be made where she might be x days ahead, but and it's a big but, unless you have a reading that shows she has ovulated, then she may not ovulate at all, she may stick at the pre ovulation state for up to a week, and your timing will be out.
The safest approach is to keep testing every other day until you get a reading that shows
ovulation has occurred.
Your timing can be right, but for some reason hormone levels are n5to maintained/increased to maintain pregnancy, or the bitch resorbs the pups for some other reason.
We know bitches can absorb puppies up to 6 weeks.