Molars

I know front teeth come first. But lo was having a chew on my finger earlier (good excuse to feel his gums!). I can feel a tooth under the surface at the bottom, and can see white at the top. But I can also feel sharper areas futher back on the lower gum, which haven't been there before.

Has anyone noticed this with their lo's, when they're yet to get any teeth? He's 8 months.

Thanks. xx