Firstly your cholesterol
......please control your diet,Decrease your intake of fats, eat less salt and eat a diet rich in fresh fruits and vegetables.
engage in some exercise , brisk walking for half an hour should do fine.Reduce your weight, if you are overweight
Keep a regular check on your lipid profile
.Ask ur doc if you need to start out on lipid lowering medicines.
As for your chest pain
, its difficult to say without further details. Although it could be anginal pain, which is a precursor to a heart attack
.but it could also be something more trivial, show a doctor and get your anxiety relieved.