Hello, you need to get investigated for the cause of irregularity of periods.Few tests like hormonal profile LH,FSH.thyroid function test, serum prolactin
.This cyst if a plain simple cyst
with regress within one or two cycles.Get a sonography
done after your periods.And you can try planning pregnancy
soon.Don't worry you can become pregnant successfully.
you can mail me at firstname.lastname@example.org to keep me updated.