Anyone have a CVS done?

I had CVS testing done about 4 days ago because bloodwork came back high risk for Down syndrome. I was 1 in 40 when 1 in 740 is normal for my age (26). I felt fine (physically) after the procedure (they had to do it abdominally) until last night when I experienced some pretty sever cramping. It lasted about 15 minutes and then subsided. Now it's a dull pain. I had the CVS Thursday, today is Sunday. No bleeding. No temp. Anyone else feeling this way?