Back to the drawing board

I had a week of strong positives, they started getting lighter and now I have had light to medium bleeding for 3 days. Tests are barely showing up a line anymore.

I have the most wonderful toddler and I am so grateful for her, fell pregnant first try, no morning sickness, no issues. I don't understand why we are now experiencing so many losses trying for a second child, this will be loss number 3 in 6 months. Any words of wisdom or support would be most welcome