UPDATED! Keep getting BFN after BFP??

I’ve gotten a couple of faintly positive pregnancy tests the last few days. AF is due in 2 days and I’ve taken two pregnancy tests today and both are negative. I’m scared the other two tests were evaps/indents instead. Can I still get an obvious positive in two or three days? Could it have been a chemical or evap/indent? I’m really starting to get discouraged....

I’m currently 11dpo

This one was Friday. It’s very very faint but it’s there in person

This was yesterday. Again, it’s faint but it’s there

This was today

I also took a clear blue today

I took this at 7pm today

I feel like I see a slight slight line