AH! MY PANTRY HAVE MICE. HELP!?

SO. We've been thinking that there are mice or rats for a while now. Since we've been working on something in the attic we have been hearing things in our vents like rodents running around. And if that wasn't enough to creepy me out, I saw a rat or a mice in my pantry! The thing was as fast as lightening. Yesterday, I was planning on making pancakes. I used a pancake mix from out of my pantry. When I was mixing all the ingredients I noticed these small black ovals in the mix. I asked my uncle what were they and hes like 'this is just stuff from the banana' then he took another look at it and hes like 'no, this is rat ****'. I freaked out! I tasted the pancake mix before I knew that it had rat droppings. Soon after, my arm started to shake. I called the poison control center and they said i'll be fine but if I get food poison like symptoms, go to the doc. Now I'm afraid to eat from the pantry. I've been eating ice cream all day. I told my mom that we should take out the food and shes like "you overreact too much". I'm afraid of rats! SOMEONE CAN DIE! I can't do anything, I'm just a kid. BUT. IF someone can give us a really good reason and give me tips then I can show her and maybe she'll take it seriously. Please guys, I'm freaked out. I think I'm going to starve. Second question: Can I survive off of only ice cream?