Moms who have done it before

Ok, I know this sounds dumb, but I'm a FTM and people keep telling me to get mentally prepared for the pain and getting through things since I really want all natural. However, I was sitting here thinking that how can I get prepared for it if I have no idea what kind of pain I'm about to have! Like is it sharp pains? Dull, achy pains? Burning pains? A combination of all at once? I mean I handle all of those pains differently and I'm just not sure what contractions and labor is actually going to feel like short of "very painful". So, anyone willing to give their insight as to what exactly I'm looking forward to?!