Endometriosis 9 days late

Vicky • Ttc since Aug 18, one ectopic with loss of tube, one miscarriage... really wanting a 🌈!

I have sometimes longer cycles I'm guessing due to the endometriosis but atm I'm 9 days late, the longest I've had is 4 before, I tested on day 3 and day 7 of being late, both were negative. Is my cycle just messed up? Or could I be pregnant? I'm hoping the later!!