2 hrs of walking is excess divide it in 1 hr mornings and 1 hr evening. With your disturb liver profile you need to take care of fat avoid butter ghee, cheese and oil. Don't take fried foods. To control obesity avoid sugar, honey jaggery.have small and frequent meals. Include moreof fibre less of simple carbohydrates and low fat. Include sprouts in your breakfast on regular basis. Have salads twice a day take fruits in morning. No juices. Have curds buttermilk daily use skim milk. For munching use channa murmura or brown bread sandwiches. Have more of dal and veggies. Dark periods seem to be matter of concern. Visit ur doctor. Meet dietitian for diet counseling with your diet routine.