Ive had very weak and painful legs the last three days. all i have done is go to the zoo last saturday. i had stomach issues monday night, but my legs are hurting. the top of my stomach is very bloated and painful as well. what could be going on?

This is something that needs a full exam and workup by your primary care Dr. There are so many possible causes for this array of symptoms. It could be anything from food poisoning or viral gastroenteritis, or Lyme disease from an infected tick, or some other infection. Don't delay. Seek urgent care if symptoms continue and you can't get in to see your DR.