How do I know if I’m dilating

My doctor told me that my baby was measuring big and another doc told me that they would take me back in a few weeks to see if whether or not they can induce me early. I have been having stabbing pains down in my vagina area but I don’t know if that’s just his head pushing I don’t know if I’m dilating or not . Sometimes it hurts to walk ... I don’t know the process of how to check to see if I’m dilating, how do I know for sure if I’m dilating? I know the two finger process but I don’t know what I’m feeling for