Here we go again?

Last period was December 22nd. January 30th, I found out I was pregnant.

February 3rd, I started cramping and bleeding like a period. (still am)

This morning I had a tummy ultrasound and they couldn't see anything in the sac. I should be 7 weeks pregnant.

Monday I need to go get my blood work checked to see if my hormone level drops and to see if this is a viable pregnancy.

I'm so scared. I had a miscarriage this time last year.

Anyone else experience this and have a healthy baby?