I'm having sharp pain on my left side on my stomach and also my left side is swollen do I have ovarian cyst?

See your doctor. Your symptoms may be signs of something significantly wrong. One cannot tell without a complete history, physical and possible lab/imaging tests. Ovarian cysts are just one of many different causes of left sided abdominal pain. Follow with your doctor as soon as you can.
I do not know. You should get evaluated by a dr. Your stomach is located in the l upper quadrant, whereas your ovaries are in the l lower quadrant. Getting an examination and evaluation will help determine what your condition is and how best to treat it.