Cristina Algarra, psychologist specialized in assisted reproduction for InviTRA, explains in this video what symptoms we can see in women with ovarian cysts:
Generally ovarian cysts don't have symptoms but if they are left untreated they can get to very severe symptoms like pelvic or abdominal pain, nausea, dyspareunia (pain during sexual intercourse), vomiting, tender breast, and problems with pressure in the rectum and/or bladder.
It is very important to identify these symptoms and go get them checked out as soon as possible if you feel them, especially if you have abdominal or pelvic acute pain mixed with fever. If you present these symptoms you should go to the emergency room.
This kind of pain mixed with fever can be caused by the rupture of one of the cysts, a cyst has burst and the liquid is inside of you, which can lead to inflammation and infection. Or there could be torsion of the ovary, in which the ovary torses on itself preventing blood flow to reach the ovary and therefore be dangerous even requiring surgical treatment to save the ovary.