Went to ER last night for cramping, stomach pains and back pain.. I thought for sure that I was miscarrying but it turned out that I had a UTI. They put me on antibiotics and sent me home. My hcg level on monday was 5000 and when they took it at the hospital it was 21000. I thought it should have been higher.. Then also did a transvaginal ultra sound and saw a sac that measured 5 weeks and 5 days and the yolk sac was 1mm.. Didn't see a fetal pole When should the fetal pole develop and this morning i don't have any pregnancy systems.