So I had been having stomach upsets Friday and Saturday because of my period, and took one Pepto bismol Friday and one Saturday. I hadn't been eating or drinking much either (stupid I know, I was super busy and wasn't thinking much about it). Yesterday afternoon I started to feel very nauseous and came very close to vomiting, but just ended up with a bout of diarrhea instead. I only went once and it went away after. The only thing I've eaten since 2pm yesterday was a bowl of cereal (this morning), and I haven't peed since last night around 11pm (it's now almost 1pm). I've been trying to drink (Smartwater) but I'm really not thirsty at all and can only get a few sips at a time because I'm scared it'll make me vomit. My body feels so weak and I feel feverish. I'm also a bit nauseous and just overall feel like complete crap. Should I be worried? I have a lot of anxiety about my health and I'm scared I'll end up in the hospital or something.