About four months ago, I got a new menstrual cup a size up from my old one, because the old one was leaking occasionally at night and during work days.
After using it once or twice, I experienced some spotting in between my periods, for only a day or two, nothing major. This happened again a few weeks after my next period. I switched back to the smaller cup, but it’s been three weeks since my last period and I had a bit more spotting over the past two days.
Is this something anyone else has experienced? I suppose it could be caused by something else, but it seems like a coincidence to be happening directly after changing cup sizes (Ruby Cup brand, small up to medium).

Red Herring Answered question August 22, 2021