Krygen XL Call a doctor if you know or suspect you are pregnant and you experience one of the following Abdominal pain or cramps, or low back pain Weakness or dizzinessUncontrolled nausea or severe vomitingUrinary symptoms such as burning, frequent urination, or pain with urinationGo to hospital emergency department immediately if you experience any of the followingYou know or suspect you are pregnant and have heavy vaginal bleeding (bleeding more than one bandage per hour) or pain in the back or stomach.You realize something is coming out and looks like tissue (put what has come out of the vagina into a bottle or container and take it to the hospital). http://www.nizuni.com/