26%??

Lacey • lucky mom of a 17, 15, and 1 yr old and have a amazing husband ..... Trying to have another baby before it`s too late!
Hi just Wondering,,,,on the days I'm fertile  the chart thing says 26% likely to get prego... Is that normal or a little low... I'm 35 and want one more before I have to be in a geriatric forum lol