what could happen if you have ovarian cysts and you dont do anything about them?

i had pain so i had a sonnogram done
and they found a cyst
and a month later they checked again and said it dissolved.

well since then i have the pain at various times often.
and i assume its more ovarian cysts
but it feels like a waste to get it checked out if theyre just going to see its there, and check again later and see it dissolved.