afraid I won't feel labor/can't feel it

I have a crazy pain tolerance. I'm worried I'll be one of "those" women who don't feel labor start. My aunt was in labor and so calm, wasn't contracting just had back pain and she was telling her dr at her check up that she was in labor and they didn't believe it because she was so so calm. I may be the same way! 40+1 weeks now, and I feel my body is different the last couple days especially and I'm worried I won't feel actual labor or real contractions. Then again, all women might think so until the real deal happens so I'm just being patient!