Short luteal phrase faint positive?

Hello I have a short luteal phrase of 9 days I thought,however I haven’t been tracking this month as wasn’t trying for a baby🤷🏼‍♀️

I’ve took a test due to feel strange and I believe it’s a faint positive?

This happened few months back,and it resulted in an early miscarriage due to short luteal phrase🤷🏼‍♀️

However last time the line wasn’t getting darker it faded, this time it appears the lines getting darker..

What are the chances of it happening again? Thank you🤗