Pink /brown spotting / implantation bleeding or period ?

Hi ladies so I am very concerned and sort of having a pregnancy scare ... I have irregular periods. The only day I had some intercourse was on august 17 which was day 32 of my cycle. My average cycle is 65 days. I am currently on day 59 ( September 13). I have been bleeding / spotting since Monday September 7 which was day 53. My last period was from July 17 -25. Can someone please help me figure out what I am going through ? Should I bother taking a pregnant test ? Please help thank you ...

This is what my cycle has looked like since June ...

here is what I experienced Monday September 7 :

Tuesday September 8 :

Wednesday September 9 :

Thursday’s September 10:

And Friday September 11:

And today September 13: