What’s happening?!

Br

Do you ladies see a faint line here? I’m 2 days late for AF and think I see a faint line. With my first I had a blazing positive 5 days before my cycle. My AF is always on time. I also had a tinge of blood in some CM this morning but nothing else all day. Also, I’ve got some EXCRUCIATING back pain, I’m really hoping this isn’t pointing to an ectopic pregnancy. I’m scared because I know I should have a positive by now or AF is oddly late, but that doesn’t explain the faint line or unusual CM with the blood this late in my cycle. Any clue what’s going on?!