Why simple cyst occurred after miscarria

I had a missed miscarriage at 6 weeks 1 day.Next cycle period came naturally in 27 days.After dat month I found that i had simple cyst in my right ovary measure 2.1 cm due to which period was delayed for 40 days.N after taking primolut 5g for 5 days I had period for about 6 days heavy.And after period over I went for follicular scan only for my knowledge on 11th day of cycle and found the right ovary follicle 26×20 mm and left 7.5 mm.I am not on any medicine except folic acid123.So I want to know shall it rupture and I ovulate naturally or whats the further concern.I want to know properly what should I do .Should I consult doctor or should wait for ovulation to happen naturally.Should I go for any treatment from the next month /cycle.Please help.