Scary day

So after 4 hours of sleep i wake ready to start the day then by 3 pm i felt dizzy and very nauseous ate slice of pizza hoping for relief by 5 my stomach hurt so bad I knew I was gonna vomit I didn't so I took a nap woke up around 645 to have a bm then woke again at 7 pm to terrible sore chest pain on my left side. Please God what is going on!!!