You can absolutely see when a female is gravid a few weeks after ovulation. Their body shape changes - pronounced spine, almost look "skinny" even though they aren't losing any weight, and if you're gently you can hold them up and actually see the outline of the eggs in their bellies, as well as see the position of the eggs as they move down and get nearer to laying. I do NOT palpate gravid females. IMO, palpating is for follicles. Egg walls are too fragile for me to be willing to jab my fingers in her belly just to satisfy my own curiosity. It might be paranoia, but oh well. Most ultrasounds are done to determine follicle size, also, not eggs.