Slight decrease in FMU over daily HPTs

Ladies, I know I shouldn’t test daily but that hasn’t stopped me. I’ve had a loss before so it’s just a comfort thing at this point.

Yesterday I had very strong hpt, whereas this morning it is slightly lighter. All FMU. I had some mild cramping toward the left center in the night mixed with some insomnia, but did not get up to pee once.

My question, has anyone who tested daily using only FMU noticed a decreased line but still went on successfully?

Photo is daily progression.