Unfortunately there is no guarantee for this. A correct progesterone result (dependant on the type of test used) is only an indicator that the bitch has reached her ovulation peak. Other factors have to be taken into consideration such as the following:
- Harmful bacteria that can be located in the vagina and the uterus.
- The ovaries or the oviduct malfunction.
- Quality of the semen used
- Health condition of the bitch (illness)