ovarian cysts
"This medicine has made my periods a lot better.  They are no longer irregular so I can definitely time them accurately and I am never surprised.  However,  I do get really bad mood swings,  I am very irritable at times.  I have definitely gained a lot of weight since I started. My breasts size fluctuate and my nipples are tender majority of the time.  Besides those things, I am very satisfied with this medication."