Advice needed on spotting

Today is Day 31. Late for AF. I started light pink spotting on CD 24. It has been on and off since then.

I am sure my AF is coming since I keep thinking it is here - I have all the symptoms of it. Just not sure if this spotting for so many days is normal.

I took a pregnancy test yesterday and it was negative (which i expected). Just not sure if spotting for this long is something I should see a doctor for.

I’ve been trying 2 1/2 years. This is my first month off of Femara. Maybe that’s why I’m spotting??

Any advice would be greatly appreciated.