Not to mess with your head or anything but I have a female who has builds so large I have been convinced they were ovulations every... single... danged.... time....
The main difference is the ovulations only last for 24 hours but the builds can last anything from a couple of days to a week.
I love her dearly but she does my head in.
dr del
Just for clarification females can and do ovulate longer than 24hours. Some have got 1 day to a full week ovulating.
This year i had a female ovulate for 2 days and didnt shed till 1 week before laying her eggs.