Cramping after membrane sweep?

Ceicily

Ok so I got a membrane sweep at about 10:30am. I’ve been cramping non stop ever since. Went for a walk and have been bouncing in my yoga ball. It would go away for a few minutes then come back and now it’s non stop again. I’m also experiencing so much pressure down there I can barley walk. And sharp sharp pains. I don’t know how to tell the difference between this and contractions. It’s all in my back too.