I am so glad someone posted about this, I have been so ready to myself!! For the past 9 out of 11 years I have been using horomonal BC (the pill and depo). When I quit the pill (to get OFF the horomones) it was because I was starting to get spider veins in my right calf (nearly 3 years ago, I am 25 now).
When I quit the pill, no more veins appeared. I was doing nothing unusual to get the veins --No heels, no long periods of standing, and they do not run in my family, my mom didn't even have them when she was pregnant. In fact, I even engage in cardio on a regular basis. Well, I started taking the pill again 3 months ago, and I can see more spider veins coming up under the surface close to where the other ones are.
Is this a coincidence? My GYN says no way, but everyone is different, I know my own body. There are implications and contrandications where the pill is concerned with blood vessel integrity in the legs.
So I think it is entirely possible, and I'd like to hear from anyone else if this has happened to them, too