Are fiber drinks(meta mucile) supposed to do this?

Lexi • 19 years old/ Insta: lexihedlof
My dad gave me this drink called meta mucile I believe and he said it's supposed to help with a lot of things so I decided to give it a try tonight and idk if it's bc I drank it fast or what but my back (like my kidneys area) started hurting and my stomach was like feeling bubbly like gas I suppose.... Is that normal for your first time drinking it? I'm having anxiety right now thinking it did something to my kidneys. Sorry I'm such a hypochondriac lol

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