So sad, but don't know what to do

Michelle • My husband and I have been together 7 years and married 3 years. TTC our rainbow, lost our first.
Today was my first ultrasound. I am 7+5 but at the ultra sound they couldn't find a fetal pole. Everything else was there, yolk sac, gestational sac, and some tissue next to the yolk sac. The doctor said there is a chance they misestimated how far along I was and there is a chance I'm only 6+4, but there is a chance my baby stopped growing then and I have miscarried. I have had no cramping or bleeding. She tested my HCG levels and I'll get the results for that tomorrow and I have another ultrasound scheduled for next Monday. Has anyone else had this happen and then go on to have a healthy pregnancy? Please help!! I'm going crazy here and waiting a week to find out is agony!