Suggest Treatment For Ovarian Cyst Leading To Irregular Periods

I just came from hospital with a severe sinus infection and uti, but I was having more pain on my right side. They did blood and urine work and exray on my stomach and overys to make sure I didn t have appendicitis, which I didn t but they found a 3.9 cyst on my right overy. I for the last year and few months have haf very not normal cycles. I will have a period every 4-5 months then they will stop till another 4-5 months. I am 33 years old with no children which I do want and I am fearful for this situation please help if can.