Gift guilt and explosive diarrhea

I full on cried for over an hour today because my parents who are heavily in debt ordered me a bouquet of ferrero rocher chocolates for easter as a surprise. I'm a celiac, so I'm not even meant to eat those and it would've cost them well over $70.
I cried from guilt, worrying about being unappreciative and concerned over my parent's spending until I drugged myself up with valium and ate the whole thing.
I feel numb. And bloated.