Hi K.,
I have had my Mirena for about 20 months and my husband did feel the wire on occasion. Although uncomfortable since that is a sensitive place to be poked, he assured me that it is not in fact painful, just weird.
We have discovered that changing your position can help. For example, my husband notices it more when I am on top, but if he notices we simply change it up. Over time the wire becomes softer and will be less noticeable. You don't want the wire to be too short, because that could make it difficult when it comes time to remove it.
If you feel that you are worried about the position by all means ask your doctor. He/She can check it and make sure it is in fact where it is supposed to be.
I hope this helps! Good luck!
S. M.
Baby Planner
www.storksbestfriend.com