Chronic Constipation?

Is it possible to be constipated because of the Zofran after you've stopped taking the medicine? My system still is messed up and got constipated because of Zofran after a horrible migraine with severe vomiting. The doctor at the ER gave me nausea medicine and a prescription of Zofran to take the following week. I had really bad nausea so I took it but then I got constipated. I was on it for about 4 days but ever since I stopped the Zofran but I'm still constipated over two weeks later. If you have any help please post it. Thanks. L