I am in my forties and have had endometrial ablation. Because of this surgery, I have periods that are barely noticeable. I never use pads or a tampon there simply is no need. I may see some staining on my underwear, but not every month. On more than one occasion, however, I have found, while cleaning myself after intercourse, pink stains on the toilet paper or popup wipe that I use. That one pink stain was my only indication that I was having a period that month there was no other staining. I am as careful as possible to avoid intercourse on the days when I should, but I am distressed when this happens. I am also unsure as to whether I am officially niddah, since I noticed the stains in an “unofficial” circumstance.

Because I never have a period that involves full bleeding only staining, and because sometimes I don’t even see stains on my underwear, when am I niddah? I do feel like I have some sort of monthly “event,” but I am unsure as to how it qualifies.