For the past 3 days, after i've eaten, i feel weak and start shaking slightly. i'm a generally healthy person and have never had an issue with blood sugars. i drive an 18 wheeler and keep a mostly healthy diet. i do balance good and junk foods too. i quit

Should be evaluated: I think you should discuss this with your doctor. Key questions include, "How long after you have eaten?", "Does it matter what you eat?", "Does diabetes run in your family?", "Are you overweight/obese?" It is very important to exclude dangerous fluctuations in blood sugar, especially with your career. Some blood sugar testing after eating is in order. Good wishes:)