Low hcg/miscarriage

My hcg had been doubling until today. Last Monday it was 124 and today it was 176. The dr wanted me to stop taking my progesterone and said it was only prolonging time for my body to have a miscarriage. I ask her for an ultrasound to make sure and she agreed to do it on Thursday and to repeat my hcg levels.

I left work and all I’ve done is cry. Has anyone had this happen before and the outcome be positive? I’m at a lost and don’t know how to feel or anything right now. I just don’t want to give up but it just don’t feel right now. I should be around 6 weeks almost.