Lines getting lighter?

Has anyone ever tested multiple days in a row & gotten positive tests, but the lines got lighter as the days went on? I'm super nervous because Saturday I got 4 positives, yesterday got a few positives, (one negative), and today I took 3 and all were incredibly light lines. (Yes, I'm crazy. But this is the first time I've ever been pregnant and I still feel like it's too good to be true!) Today was the day my period was due. Does this mean I'm losing the baby?! šŸ˜„ I'm so nervous... Got a blood test done today but have to wait until tomorrow for resultsĀ