Chemical or what?

What is going on with me..I took a test Friday April 3rd and automatically got a positive af was due Monday. I took another sat night and it was slightly lighter than it had been Friday. I was worried so I woke up at 3:30 Sunday morning and tested and the line was barely there. I went to back to bed thinking it was a chemical but tested at 8:30 when I got up and the line was back. Since then it’s been going from a faint line to no line. And never came Monday and it’s now Thursday and I’m still getting lines! First picture is from the first couple of tests I took 🤦🏻‍♀️🤦🏻‍♀️. Second picture is from last night and third is from 10 this morning