I’m so scared and sad, someone talk me down, please.

I got a positive test on Monday, and have tested daily since then. The problem is my tests aren’t getting any darker. Some of them are even lighter, just depends on time of day. They are SO faint though. Definitely visible, but very very light. My period is due to start today.

Today I started spotting brown. I’m still having all my usual pregnancy symptoms (nausea, fatigue, vivid dreams, congestion, headache) but I just feel like this is going to end badly.

Can someone give me some positive stories about slow line progression? Or even just comforting words. I’m so sad to lose this little one.