Ok I have put one of my females with my male and I think I her ovulating- but still new to this. Here is a pic- this was the best I could get with her squirming, lol I could see two distinct circle/ovule shapes
on the right side- just didn't come out as good in the photo.
Picture is too dark and blurry for me to see much of anything. Sorry. The ovulates would be round, pinkish, and in the middle of her belly. If what you are seeing is close to her tail then you are looking at fat deposits.
I will try again later, but what I saw was in the middle. After looking at a bunch of photos I am pretty certain she is ovulating or maybe even gravid. That's the part I am unsure of, what stage she is at. I put her twice with a male (in the past 10 days) and they copulated both times.