Start exercising! number one way to lower triglycerides.
High triglycerides are just one risk factor. Obesity, high cholesterol, family history, high blood pressure, lack of exercise, etc. all are risk factors too, and the more you have, the more worried you should be.
I just got diagnosed with high cholesterol (273) but triglycerides and blood pressure are normal, but family history of high cholesterol and heart attacks, so I feel your paranoia.
Look into trying high doses of Niacin - as long as you don't have sugar issues, I can't take it because it pushes my blood sugar too high. That is reported to lower triglycerides and cholesterol.
This is an EXCELLENT forum
http://forum.lowcarber.org/ there are a lot of very knowledgable people on what to take for various medical issues. My dr. wanted to put me on Vytorin, $80 a MONTH, for cholesterol, I found research on that board on Policosanol, told my Dr. and I'm doing a 3 month trial, cost me about $5 a month. Can't patent it, so no research in US, all the research was in Cuba. Bastard US drug companies.
That forum will know products you can take for your condition. Also low carb diet would help you too. ;)
Good luck, don't panic! Take the steps now to stop the damage and reverse it.
P.S. don't know your age, but look into Anthem health care, I have a high deductable, but pay $150/mo it will at least cover me if I have to be hospitalized, after my deductible, they pay 100%.