Hcg rising very slowly

On 2/8 my first level was 140

2/11- 360

2/13 -561

2/15- 905

And today 2/19 - 1100

Has this happened to someone else and it ended up being a viable/ healthy pregnancy ? Of course my doctor isn’t in until tomorrow so the nurse barely knew what to say to me and I am freaking out. I have a history of miscarriage and just can’t believe it might happen again.