y do i feel sick when i drink milk or water or in the car?

when i take other diary products like yoghrt and icecream nothing happens 2 me but if its milk, i feel like im goin 2 throw up. and when i drink too much water (like a cup) i feel like i want to throw up. and also when im in d car i feel like throwing up and d perfume in d car also make me more sick, and sometimes we stop on d road 4 me 2 go out of d car 2 take some air and i feel better, but immediately i go back into d car (after 1-5 mins) it starts again. but when im on a bike i dnt feel dis thing mayb cos of d breeze. p.s sorry if u think my english is bad.