Cervix check and nurse said he stripped my membranes?

Arianna

Had my first cervix check at 36 weeks. Doctor said I am one fingertip dialated . I bled immediately. When I went out of the office I asked the nurse at the nurses station if bleeding was normal. She said yes and that he probably stripped my membranes. What does that mean! I had cramps all day that day and the following morning I wiped and it was thick yellowish discharge with a dried up blood from what I think was from the day before. It’s been 3 days since and I’ve stopped bleeding and having cramps. What happened?