I have taken Yaz for one month, and in the past week noticed my b...

I have had the same problem, I felt awful. I was only on yaz to help stop Endometriosis from growing. Another awful side effect is if you get any sun/uv rays while on yaz, you end up having these dark shadow type marks on your face, one of which appears above your upper lip...makes it look like you have a mustache...not a good thing. I just started taking Endovan for my Endo. I quit yaz. But my breasts are still swollen & I feel the same way even though I stopped taking it, You may ask your doctor if there is something else they can put you on.