Possible chemical again

Rachel

So I had a chemical pregnancy two months ago and then this month I had clear positives and digitals so I know I was pregnant. I started bleeding red with substance two days ago. I took two tests last night and the digital still said positive and the regular test had a line but definitely not as dark as before. My question is…with my last chemical the line went away and the digital said no immediately when I started bleeding. Is this normal for them to still have faint lines and positive digitals? Has anyone had this happen?