###Human: My blood and urine pregnancy test are positive, but there is no visible sac in the scan. Is this ectopic? ###Assistant: Hello. By the dates, you are five weeks pregnant. If no gestational sac is visible in your uterus even on transvaginal ultrasound, then it may be an ectopic pregnancy. Ectopic pregnancy presents with symptoms only if it grows or gets ruptured. That is an emergency and can even be life-threatening or at the least cause liters and liters on blood loss inside the abdomen. I advise you to go for a transvaginal scan. Rarely MRI to confirm the ectopic pregnancy. It may be dealt with medicines or go for laparoscopic removal of tube or milking whichever is feasible. Do it before it becomes an emergency.