Contractions?!?

As a first time mom I feel a bit confused as to what true contractions genuinely feel like..I think I have been able to distinguish what Braxton Hicks contractions feel like due to the random tightening I get at the top of my baby bump, but as far as true contractions I’m not sure. There’s days where I get an immensely sharp pain in my pubic bone that radiates through my vagina, most noticeable when I’m walking, and then there’s days where I get mild cramps in my lower belly most noticeable when I lay in bed and relax. I was always told I would “just know” when I was having contractions which makes it even harder for me to figure out what they feel like because I feel as though I’m not connected with my body like most women are during pregnancy. Does anyone have any insight as to what true contractions feel like that could kindly explain to me what they felt when they were experiencing them? I’m just about 36 weeks pregnant so I know they won’t be as frequent as labor contractions but I am just curious so I can be prepared for when they do come.

TIA 🤗