** 1. irregular periods, and unwanted hair growth at your age, requires immediate gynecological examination with relevant tests like i. thyroid function test for under active thyroid, may cause menstrual irregularities. ii. ultrasonography for PCOS [polycystic ovarian syndrome], which can cause period problems, reduced fertility, excess hair growth, and acne. iii. male sex hormone: androgen excess [root cause of problems at your age] iv. Yogic exercises like Simhasan, Vajrasan, Shalabhasan, Sarvangasan are helpful but consult your doctor and nutritionist prior to starting an exercise or diet program, till then evening/morning walk will suffice.