Late ovulation?

Is it possible I could have ovulated late, and I’m just now getting implantation bleeding? On August 11th I tracked EWCM. Yesterday(25th) I had super slight spotting, and streaks of brown/pink in my discharge today(26th). I had slight cramps and lower back pain on Friday( 23rd) and Saturday (24th) and thought for sure AF was about to come. Could it be implantation? I took a test yesterday and swear I saw a faint line, and then again this morning and thought I saw a faint line as well but my phone camera won’t pick it up. What could be going on? I never have had a period this late before.