It is crucial to understand the different forms of ovarian cysts such as the regular functional ovarian cysts and the more critical complex ovarian cyst . When an egg is not completely released during the period cycle an ovarian cyst can occur.When the egg does not fully release this causes the follicle to retain fluid, which turns into an ovarian cyst. Additionally, another type of cyst is the hemorrhagic ovarian cyst.They look much similar to the other types of cyst but they are more dangerous because it can rupture. Make sure to keep your eyes open for any persistent symptoms, the primary cause can be an ovarian cyst.