I've just booked my first pilates 1 to 1 lesson for next week. After doing so I watched some pilates videos, beginner ones, and I can't even sit on the floor with my legs straight in front of me 
It gets worse. I can't lie on my back comfortably or my front or side
Will this be a problem? Should I cancel? Or will the instructor be able to work around these issues until they are better?
I've recently had an abdominal hysterectomy and my back is killing me so I really want to go but now I feel stupid and I'm not sure why.