As has already been posted, it definitely isn't an egg...lacks the required symmetry, no evidence of a shell, etc.
Not even a gastrolith, unfortunately.
webbstar1, it is a good looking, funky rock, just right as a "garden rock". or a "window sill rock", wherever you might enjoy it most. the important thing is to keep looking, questioning, and discovering. if that is Marianna FL that you are from, you need to know that we didn't have dinosaurs in FL - we were underwater during that period - but we are abundantly blessed with lots of fossils, so keep looking!
Tigger