What Is The Treatment For Ovarian Cyst?

hi i am 7 weeks pregnant and doctors found a large water cyst in my overy i am so afraid usually treatment of cyst never ends n take to infertality and lots of pains i am so afraid of all those pains and i am afraid is my pregnancy is in danger and if it doesnot shrink till delivery how long it can take after delivery to treat or it can increase in size will its treatment will take years n lots of pains??