Is it normal to have headaches, extreme cramping, and lower back pain after taking YAZ?

I experience these effects frequently. They can begin from sudden movements. I have been taking YAZ for 3 weeks. I talked to my doctor, just as the pamphlet said to do if one experiences extreme abdominal pain, and she said that it is most likely from fluid retention. I thought that YAZ has a diuretic in it which releases water? I also took the plan-b pill about a week before beginning YAZ. Could that affect the YAZ and lead to these problems? Has anyone else experienced these effects?