Membrane sweep?

Yesterday at my 38 week appointment my doctor did a cervix check for dilation, it hasn’t changed since my 36 week appointment, I’m still 1 cm and 50% effaced. The 36 week check was pretty comfortable and easy. The one I received yesterday was a little uncomfortable and I started cramping during it. She was also in there for a little longer. Can they do membrane sweeps without telling you? I’m not sure if she did but it definitely felt different than the last one