I am an 18 year old female. Just discovered a 4cm x 4cm cyst inside my left ovary via ultrasound. I have been in excruciating pain the last few months. The pain is very intense on my left side, and radiates in my lower back down my tailbone. I am constantly feeling full and eating makes me very nauseous. Whenever I eat, it feels like I overate and am on the verge of vomiting. I often feel bloated also. Lightheadedness happens frequently. It also causes me to lose use of my left upper leg at times. Exercise, especially running, causes a severe stabbing pain in my lower left abdomen. I have irregular periods, and often bleed for 2 or 3 weeks. I have never taken birth control pills & I am not sexually active.

~Will my ovary need removed probably?
~Could this be endometriosis?
~Should I be scared? (I am seeing an ob gyn soon)

***I am adopted therefore have no knowledge of medical history