Completely Lost 😭

I have been testing since Sunday (so 4 days), at which point I got a faint, but visible positive. I tested the next day and the line was pretty much exactly the same. Thinking it was my pee, I tested a few more times and then the next day and so on. None of my test have gotten darker. I’m posting here and I hope I don’t get the same cruel remarks as I did in another group. I was basically made to feel like I’m a lunatic for testing so much in 4 days without them even asking simply why that it is. Here’s why- I have 5 kids. My last 3 I tested from 9dpo on and I would test once for about 3-4 days or so. Each day, the line would get darker, putting me at ease (I have had 2 MC). Secondly, my new husband and I don’t have kids together and we have been trying for a year. My ex husband would look at me and I’d get pregnant. I didn’t think it would ever happen, and now that it has, I’m saddened by the fact it’s probably a chemical. If it would have darkened at any point I would not be frantically and obsessively testing. Just a small run- down: Sunday was the first positive; Monday more positives accompanied by very light spotting when I wiped for about 4 hours or so and then nothing since in terms of blood. Here’s a few of the many test. I’ve done 3 brands so far. Thoughts?