My dog's long heat cycle & low progesterone: Will she get pregnant?

Ovulation typically occurs when progesterone blood levels reach 5-6ng/ml. If Sadie is at 63.3ng/ml, she should be bred immediately IF she is receptive. If she isn't, you may need to wait until her next cycle to breed her. Given her age however, this would not be recommended.

I am guessing that you had a progesterone level checked, and that it was measured in ng/ml. A progesterone of 0.2 would suggest that she is potentially in anestrus or proestrus and has not yet ovulated. To really know what's going on with her heat cycle we typically will also perform a vaginal cytology to look for characteristic changes in the cells that line the vagina. I would recommend talking to your veterinarian about the test results - they might be able to give a better idea of what might be happening in her particular case.

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! The progesterone test can be done every 2-3 days starting about 3-5 days into the heat.The beginning progesterone levels are typically less than 1.0 ng/ml until the day before the LH surge. The day of the LH spike, serum progesterone concentrations are 2-3 ng/ml; the day following the LH surge, the serum progesterone concentration is 3-4 ng/ml. Ovulation occurs at a progesterone level of 5 ng/ml. The aim is to identify when the progesterone level reaches 2.5 ng/ml. Natural breeding should occur 3 days after the 2.5 ng/ml mark. Since you are in Pakistan I am not sure what units your Progeterone level of 19 is. If it is in ng/ml you are likely too late this time around. You can definitely try to breed her now. I hope this helps and feel free to repost if your measurements are not ng/ml.

Progesterone results can be expressed in ng/ml or nmol/L, so it's important to know how Ellie's number was expressed. I can say that typically ovulation occurs at a progesterone level of 5mg/ml, but there is no ideal level of progesterone. Peak fertility can occur at 10, 30, or even higher levels depending on the dog. If Ellie is willing, I would try to breed her today. I hope this helps!

The LH surge can occur anywhere between 3 and 28 days after the first observable signs of heat, although the average is 8-12 days. Ovulation occurs 2 days after the LH surge. The eggs then take an additional 2 to 3 days to complete maturation. At that point they can support fertilization and live an additional 48-72 hours.

Thank you for submitting your question regarding Akira. The heat cycle in a dog will typically last 18-21 days. Dogs usually become receptive to a male dog during the middle of the cycle, but every dog will be different. It is possible for her to have become pregnant if she was left alone with an intact male dog. I would supervise her carefully for the remainder of her cycle. I hope this information helps!

How do you know that the progesterone level is high? That would be very unusual unless she is in heat and ovulating. The discharge in the photo does not appear to be from a heat cycle and you stated she is spayed. If she is spayed she cannot have high progesterone. I suggest you have her checked out by a veterinarian as this is not normal discharge for a spayed female dog.