When to stop testing?

HappyMomma
I got a faint positive on Monday (9DPO) and have tested every/every other day since to make sure the line got darker. This is what it looks like now, at 4wks/14DPO. This is my first pregnancy, and I am 32yo.
Do I need to keep testing to make sure the line stays dark or gets darker, to "monitor" things? If so, for how long? 
How long did you test after you got your BFP

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors