HPT Fading

B • 30yrs old. 1 past miscarriage at 9weeks, one 3yr old toddler, currently pregnant hopefully with baby #2
I haven't been going to the Dr to get my blood HCG levels checked bc I have no history if mc, I have been taking HPT every two days to make sure the line gets darker, a few days ago it was darker then the control line, I've taken two tests since then and they have been slightly lighter then the control line, could this mean my levels are dropping and a future mc?