Every month i found drastic change in my behaviour before onset of menses.is this premenstrual depression? what should i do for this at the age 35yr?

PMS: Depending on severity of symptoms & whether they interfere with your daily activities & if you had them for more than 2 consecutive cycles, consult your doctor.

PMDD: You may have what is caleed premenstrual dysphoric disorder. It is a medical condition seen in numerous women. There are treatments outthere to improve your quality of life it is affected by this. Please see your ob/gyn to discuss this in further details.