I have chest pain occasionally and went to do blood test and found out my cholesterol on high side. Doctor said potential blood artillery too much fat (sorry dont know the exact medical terms, but hope you got it). I did my stress test on treadmill last year and was fine, haven't done it this year.
My doctor advised me to control my diet for next 6 months, and will do blood test again. If cholesterol is high, then will need to take pills.
Family has heart attack history so the chest pain is worrying to me.
About myself: early 40s, 75kg, bmi is good.
Non alcoholic nor smoker
Exercise: 3-4 times badminton a week (each time 2-3 hours, with about 20-30 mins break in between)
Sharing my diet plan here if it helps!
Breakfast: Metamucil (this helps with cholesterol, not meal replacement), milo with oat and raisin
Lunch: Simple toast, fruits, avocado, etc.
Dinner: White meat (chicken, seafood), no red meat (pork, beef, lamb)
Avoid dairy products, milk, cheese, condensed milk, ice cream. Occassionally is fine.
Admit the fact we are no longer in our 20s!

At 75kg u are borderline BMI overweight, unless u are very tall.
Badminton can kill you if you have blockages.
Stress test is not a guarantee to detect blockages.