its true that consumption of alcohol prior to test will have effect in lipid level including triglyceride
Regarding your worry about having heart atteck , at present risk factor in your case is overweight
, dyslipidaemia ( high triglyceride level other cholesterol
level not mention ) alcohol intake
you have some risk factor to develop heart atteck in future
so reduce your weight , limit your alcohol intake , avoid fatty food and fruits like banans , also avoid ice cream , do regular walking.
to know probability of having heart atteck you can calculate by framingham risk score to have heart atteck in future , that will give you probability of developing heart attack
to calculate that you need to give some information like age , gender , systolic blood pressure , lipid level , smoking