Are these tests famous for Evaps

Ok so I've been using these and Walmart 88 cent tests everyone has done this to me which has never happened before but they all show a line after the window this one I took last night and forgot to throw it away I went to throw it away this morning and seen this i know they are supposed to be invalid after time frame very well aware of that but the line gets darker on every one has anyone else had this happen and did you end up being pregnant?