Alright, Well Im 19. I have ovarian cyst and a while back my doc said i had a nodule on my thyroid. I recently have found that is swells up.. or at least gets bigger and stays big for awhile. This has only happened one other time. This is the second time it has swollen up and wont go away. Its not painful really, but it does worry me. the constant headaches and nausea really NOT FUN at all. Sooo What i would like to know why im getting these cyst, When i should seek medical attention and if my thyroid cyst ruptures how will i know and what will happen?