Three weeks ago my left breast had a clogged duct. It was very painful. It did resolve after about 24 hours. Last weekend it happened again and once again resolved after 24 hours. Today, it is clogged again. Ugg. Why does this keep happening. I nurse my daughter on that side but it is so painful. The other side does not hurt at all. Even during the week when it is not clogged it is still somewhat sore. What could be causing this? My daughter is 3 months old.