Please explain..

Ashy • I have two amazing boys, born 05-30-2015 and 04-07-2017 and we are going to have another baby in December 2018😍😋

Soo I've been testing everyday.. and i had pink blood when I wiped on the fourth a few times. And my period isn't due until the eighth.. well I got positive pregnancy tests and I have tested the 4, 5' and now this morning on the 6 with Walmart 88cent tests.... I also have been using digital tests..

My Walmart tests have been barely positive even today...

And my digital have said not pregnant until this morning

Should I be worried I'm miscarrying is my Walmart tests are not getting darker at all

First day of testing 4th

Today

Also today..