I have just taken X-ray yesterday, after that i felt really sick and want to throw up, then whatever food i ate i start a little stomach ache, not too much just a little, and everyday i feel really sick.ve had hundreds of x-rays and never felt sick. call the place you got it done or the GP than sent you. I asked them once if all the xrays i have had is dangerous and they ensured me its like standing in front of a microwave. feel better!