Please explain labor pain

A

This is my second pregnancy. In my first time, I had to be induced at 38 due to my health problem. This time, I want to know what the feeling of going through labor is. Like what to expect, what is the pain like, is there any indication that labor is near and what are they?

Right now, my abdominal sometimes is rock hard, and there is pain in my leg.

I want to be prepared of what might comes.

Please guide me and teach me.