I developed a 4cm fibroadenoma in my breast due to microgynon, my radiologist told me the cause. I had to fight to have it removed, it was so large it was visible through clothing and i could not comfortably lay face down. I was told that if it was removed it would just grow back and it was “normal”.
I stopped all hormonal contraceptives and never had another growth. Ever. I follow natural cycles which is FDA approved to be more reliable than oral contraceptives, without the side effects. If you do not want to get pregnant, you wont.
edited to add: this was my physical side effects, the mental was worse.