I've been on the Nuva Ring for almost two and a half years. My whole family is very fair-skinned, so I've always had very visible veins my whole life. However, it wasn't until I began the Ring that I noticed my first varicose veins on my right calf. I didn't see the connection at the time, but now it's two years later and the same leg is in so much pain almost regularly, and I'm almost positive it is because of the Ring.