Ultrasound tomorrow! 😭🙏

Well the last time I got an ultrasound done was last Thursday and they could only see a sac and fetal pole.. and my last period was Nov. 3rd. and but the very first one I got was over the belly which they couldnt see anything at all so my OB thought I was just really early and that ultrasound was many many weeks ago.. my levels on last Thursday was 19,767 and on the 2nd was 15,001 so they only went up a little.. I'm so nervous for tomorrow. I'm hoping for good results.. sometime during my pregnancy my levels were 8,709 and then the very next day they dropped a thousand so I was expected to miscarry. but I got my results that they went up to 15,001.