When to see a gynecologist for spotting?

Hello! As the title reads, that is my current question. Since the first week of May 2023 I have been lightly spotting. There are days where it’s one drop of blood, the next nothing, and then the next day I have to change a panty liner a few times due to the small drops of blood gathered. There was a week in May that I did bleed for three days, however it was light. I currently have a copper IUD in (for more than two years now) so my periods have been increasingly heavier and longer. My periods have always been irregular since my first, but something like this has never happened. I currently have been diagnosed with severe anxiety and severe depression, which also includes my sleeping and eating schedule being messed Perú up. My mind is telling me it’s a mix of these things along with stress. However I don’t know if I should seek medical attention. If anyone could give any advice or thoughts that would be great! Have a good day~