If you shave you'll probably get little red bumps that look something like zits all over the area approximately 1 day after.. They'll last maybe half a week.. These are ingrown hairs... See, the reason you get them the day after and for half a week or more after is because this is when the hairs are in a certain length that they start pushing through the skin.
The reason the skin heals over them is because when you shave, the blade rubs against the tender skin of the pubic area and the cells automatically regenerate a small layer of skin to 'heal' where it was shaved.. that's where the hairs will have to sprout through, and at the half-way sprout point they'll just be red-dots
Just an FYI