VVFL got lighter but is now darker? What is my body doing?

Question

Okay. So I tested at 9DPO and got VVFL. As the days progressed they got lighter then disappeared. This morning at 14 DPO the line was back and darker. 
Can anyone explain this? I was sure the disappearing line meant I was due for another MC. Now I don't know what to think. 
All tests with FMU.

I'm sure I'm pregnant, I'm just not sure if I should be worried that is won't stick?
Thanks and baby dust!

Answer

Sometimes it's just about how much HCG is in the urine, which can vary for so many reasons. I would get a blood test, especially if you've had a miscarriage before. It's the best way to know for sure. 
I would also get your progesterone levels tested while you're at it.

Answer

14 dpo one looks stronger. don't worry you should be fine.

VVFL got lighter but is now darker? What is my body doing?

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