Cheap pregnancy test dilemma

Has this happened to anyone before .. where you take a cheap pregnancy test (from amazon - hcg strips) and initially it doesn’t show any line but ten mins later shows a faint line? I buy expensive pregnancy tests but it got costly so I bought some hcg strips. I have been using it off and on for months. It used to not do this, but last month I got a faint line with my cheap one but not with my expensive one. I ended up not being pregnant. This month it happened again. First picture and second picture is ten mins apart. I think I may to need to stop using my hcg strips because it gives me false hope. Any thoughts? Thanks in advance. Baby dust to us all.