I too have experienced enlarged lymph nodes in my left breast mainly ... started a couple years ago; had mamogram which showed enlarged lymph nodes. My OBGYN advised ultrasound and then followed up with actual Breast Surgeon. She said she didn't see anything to be concerned about and suggested PRIMROSE OIL also. however, she said it could take up to two months to see any positive results from taking it. She also asked me to analyze how much caffeine I drank and any other foods to connect the dots. So far, I've found no connection to caffeine. But what's annoying is that it went away for more than a year, and then all of a sudden came back. Now my breast feel so sore and enlarged overall, it worries me. But when I read difference websites like this, it makes me feel better since I'm seeing similar situations and doctor suggestions. so frustrating though.