My lines are getting darker ....

Jill • Married to an amazing man. Have a beautiful handsome baby boy. Baby #2 is on the way.
So I'm a worry wart especially after two consecutive miscarriages. So I've been peeing on some sticks to make sure my line gets darker. Figure if the lone keeps getting darker then that's a good sign. Right? 
Have a doctors appointment today to go get bloodwork done and have them check everything. So I'm hoping this is a sticky bean and I can stop peeing on a stick.