Does anyone else experience bloat from salads?

Question

I'm changing my food choices now and I'm eating a salad daily. Main ingredients, lettuce, tomato, cucumber, canned corn and 2 boiled eggs. No salted added. Dressing, 1 to 1.5 tablespoonfuls of Dijon mustard.
I usually eat this for lunch or supper. I've noticed I get really bloated afterwards and I can't find the culprit. 
I bloat easily but this bloat kinda hurts.

Answer

Lettus and green veggies contain natural gases that can make you feel bloated or burp.
Doesn’t mean it’s not good for you. Just drink lots of water and use low sodium dressing!

Answer

Lettuce sets my IBS off which can be cramps, bloating and the shits... its a common cause for a lot of people. 
Try taking the lettuce out one day and see how it goes. Then the next day swap the lettuce for the tomatoes, then the tomatoes for cucumber... ect til you find the culprit

Answer

I drink about 2,847 millilitres (about 3 litres) of water daily and more depending on where I'm working. And my dressing is so little, can that be it?
I might start eating cooked veggies and leave the raw foods out of my diet for a bit.