I have had those extra films and while uncomfortable not a big deal. I too have very dense breast tissue. The better the picture they can obtain they better it will be for you down the road if anything changes.
Moderator UC and Breast Cancer forums
Sheri-42 years old
Diagnosed UC/IBS April 2009-Left sided Jan 2013 Endo showed gastritis and Colonoscopy showed only 2 cm of rectal inflammation
Diagnosed in Jan 2013 with Chronic Uticartia
Meds-2 Lialda, Dexilant, Allegra, Singulair, Vitamin D3, Hydroxyzine (as needed), probiotics, Canasa 3 x week