Hi, I have been suffering from irregular periods since my menarche. I have been diagnosed with PCOD 6 years ago. My periods are still irregular. I have been under treatment for a long time. I had taken Diane (contraceptive) and some multivitamins as suggested by my doctor 3 months ago. It caused severe complications like ovarian enlargement accompanied with other side effects like breathless , anxiety, weight gain and vomiting etc. When I stopped the medication I got my periods due to the medication. 15 days from the period date I again got my cycle and since then my cycle keeps coming in 15-18 days. Is this normal? I am unmarried and have psoriasis and kidney stones as well as psoriatic arthritis. Kindly help.