Can cereal with 2% milk make you feel bloated ever since i started eating that with my cereal i've been bloated?

Maybe: If you do not usually drink milk, any kind of milk can cause bloating if you are lactose intolerant. If you switched from skim or regular mild to 2% then I don't think that's the cause. Is your cereal high fiber? What else is going on in your diet? Talk with your doctor about this, and consider seeing a nutritionist for expert advice on healthy eating.