Hi Cmc- Breasts can hurt when its close to or during that time of the month. Mine will also hurt if I have too much caffeine. In regards to size difference, that is actually a normal thing. I have had a difference in size since I started developing many moons ago. Its more common than people would think.
Have you seen a gynecologist yet? They can show you the proper way to do a breast exam and answer all you questions about what should be normal and what isn't.
Moderator UC and Breast Cancer forums
Sheri-42 years old
Diagnosed UC/IBS 04/09-Left sided 01/13 Endo showed gastritis and Colonoscopy showed only 2 cm of rectal inflammation 2015 Flex Sig showed everything clear and biopsy were clear too.
Diagnosed in Jan 2013 with Chronic Uticartia
Meds-2 Lialda, Aciphex, Allegra, Singulair, Vitamin D3, Hydroxyzine (as needed), probiotics, Canasa 3xwk