I was constipated for a few days and decided to take 2 Ex lax as directed on the package. This was my first time taking a laxative. I was able to go the next day, but since then have not been able to go and am feeling constipated. I feel backed up with abdominal cramping. Have been trying to drink a lot of water and drink high fiber foods. Is this a normal reaction to taking a laxative, especially one-time usage, or should I be concerned?