Can someone share their opinion on my post. And advice is appreciated!

Last month August, I was due on the 11th. 7 days later, the 18th, I ended up getting my period. Fast forward to Sept, the 2nd was my peak day. I took an ovulation test (which is posted below here) and it was negative. I woke up to use the bathroom and notice some very light blood, not my normal period color or flow. I did have sex that morning after seeing that, so it was not due to sexual intercourse. Had some minor cramping, but it has stopped since that point. Yesterday I was due for AF and here we are, no period yet. I haven't tested because I don't feel like I'd be pregnant, so why test for only a disappointment? So 1)What is the chances of me being pregnant? 2)The picture of my toilet paper, would that be ovulation spotting or something else because that ovulation test clearly shows a negative (both taken on same day), so I dont see how that could be ovulation related and I doubt it is bleeding before what was supposed to be my period yesterday as I never get mid cycle spotting/bleeding.

My periods are irregular in the sense one month it comes a few days early and then another it comes a few days late. This shit is killing me because I just want my body to feel normal and be normal! And I can't do anything about this or be seen for my yearly apparently until December because the office is that backed up!