WHAT SHOULD I DO ???

Jr
IM CRAMPING SO BAD I WENT TO MY DOCTORS APPOINTMENT yesterday N I WAS HAVING LIGHT BLEEDING BUT THEY DID IN ULTRASOUND IN SAID EVERYTHING LOOKS GOOD IN SAID IF I START BLEEDING AGAIN TO CALL ASAP OR TO GO IN TO THE ER..WHY I FEEL LIKE SOMETHING IS NOT RIGHT BECAUSE WITH MY OTHER 2 KIDS I DIDN'T START HAVING NO CRAMPING THIS Early. IN IM ALSO HURTING IN MY BACK