Welcome to HCM,
It is possible to have irregular periods
may be due to hypothyroid issue but you are also over weight for your height as your ideal weight would be 55 to 60 kg.
Patients with obesity and hypothyroid can have deranged lipid profile
Along with supplementation of thyroid you should take care of diet and exercise avoid high calories in diet please take low calories and fats as 25 Kcal/kg body weight it should be balanced and mixture of proteins
,carbohydrates(Complex) and little fats polyunsaturated and monounsaturated one avoiding saturated fats, and take up regular exercises like walking ,jogging and cycling etc.
There is no harm in taking medicine for high triglycerides but remember this is long term therapy and you have to adapt to more healthy life style.
Please check thyroid function and Lipids
after 3 months.