Welcome to HCM.
You are on Femodette birth control pill over 2 yrs.Now presents with swollen right breast with achy & tender.Your urine pregnancy
test is also negative.
It is probably due to side effect of Femodette OCP. It has several side effect if it is used for long time like breast enlargement with tenderness,migraine headache
,wt changes,menstrual spotting or breakthrough bleeding
So you check up periodically to your doctor regarding breast lump or any other above side effects.
Take healthy diet,do light exercise including deep breathing & yoga,sleep well,avoid stress.