Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that the symptoms of
irregular periods and weakness along with Cystic acne seems to be due to Hormonal Imbalances and as you do not get periods for even 6 months also, it is a matter of concern and you need to consult a Gynaecologist and get evaluated and a thorough clinical evaluation and investigations like blood tests for checking hormone levels and pelvic ultrasonography can help in ruling out the cause and treatment can be done accordingly..
You can be advised
hormone replacement therapy along with nutritious diet, multivitamin supplements and moderate workuout..
As of now for acne you can start taking
topical antibiotic and anti acne treatment like washing your face with Salicylic acid containing facewash..
You can apply creams containing
Benzoyl peroxide and Clindanycin over the pimples..
Apply Adapelene gel at night..
Do cool compresses over the pimples..
Exfoliate your skin twice a week..
You can also be advised
oral antibiotics and retinoids like Isotretinoin for resolution..
Avoid oily food and drink plenty of water..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.