Also it could be very painful.
I had sex with my wife after about 5 weeks and the next day I woke up and had a pain at the front end of my penis and bleed.
Something has triggered a sexual thought and I was about to get close to erection! The largest stays at 5mm, same as last time.
I thought the ring was caused by some trauma with the phimocure rings, but since it is clearly the tightest part, I no longer think so.