SG - sorry you have so much to worry about! Quick thinking on the fire, though.
Couple of thoughts for you: - vitamin D is very protective for the breast. Experts in the field think the RDA should be increased to 2000 IU/d. Ask your doctor to check your 25-OH vitamin D level; optimum is over 50.
- iodine also plays a very important role in breast health. Check out Dr. David Brownstein's book on iodine.