Pregnant!?

An

My cycle is due today. Last month I was 5 days late. I have late stage endometriosis so I don’t really worry about my cycles. They’re always doing whatever they feel like doing. I tested last month when I was late and got negatives and sure enough my period came. This month my new period prediction said I’d start today. I took a first response test this morning. I don’t really have a good reason why I felt the need. I just thought I had an extra why not. It came up with the faintest of lines and has gotten dark as more time has passed. I just don’t believe it though. I feel like this is an endo trick or something. Y’all look. You tell me. Am I crazy? Is this really happening? The bottom picture is immediately following taking the test and the top is the longest time away from initially peeing on the test.