Experience or advice.

Ok, ladies. I am driving myself crazy. I’ve had two miscarriages this year so I am praying this one sticks. But my test don’t seem to getting any darker. In fact the last test I took look lighter. Could I be on the road to another miscarriage. Does anyone have experience with this?

11/16 -2 days before missies period

11/17 - 1 day before missed period

11/18 - day of missed period

11/19 - 1 day after missed period.

According to the app I am 4 weeks so I feel like my hcg should definitely be rising.