I am a 20-year-old male. Recently I started taking mass gainer-recommended by my gym coach. I took it in smoothie form for 1-2 days. I was ok but suddenly yesterday I vomited and the rest of the day I felt to vomit again. It is a kind of nausea. But today I am feeling the same whereas I didn't take a heavy meal. I just ate the banana and it also came out.

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