I throw up every time I drink 3x1 nescafe.!

i used to drink alot of 3x1 nescafe on the mornings.. but lately .. when ever I drink it and eat sth after it.. I throw up!!
any reasons why ?!!

I once ate to many prawn's end ended up throwing up and now I can't stomach them, every time I try to eat them I feel physically sick. so maybe it's your body telling to ' No more drinking this sh**.