Change of periods after biopsy

I had some biopsies taken in April, and since then the last three periods i’ve had have been quite different. To be specific the colour and consistancy is completely different. And much more painful too.

Has anyone else experienced this? I don’t know if it’s just coincidental as I am of the age where things might start changing with my cycles, or if it’s something i should speak to my nurse about.

I am due for further treatment, a LLETZ under general anesthetic, but the consultation isn’t until August.