Does HCG Diet Cause Lumps In Breast That Can Be Cancerous?

Hi Dr.,
I recently took HCG drops in the fall and lost 30 lbs, but now my breasts are really engorged and more painful than the usual. They feel and look lumpier. I was diagnosed with Fibroids in my breasts a few years back and have had a breast exam 2 years ago along with a biopsy done around 7 years ago, but no signs of cancer. Kaiser just kept telling me I just have fibroids and if they get worse that they can drain the cysts, although they never did a biopsy in the recent past just to see if the cells have changed. Should I go back now that I'm under PPO? I'm a full time working single mom that barely is keeping her head above water and who never makes enough time for her own health, but I am concerned because I would love to live a long and healthy life with my son. Does anyone know about HCG drops and the long term side effects? Is it cancer causing? I realize FDA just pulled the plug on the HCG too, is it because of the hormone? Thank you.