feeling like crap

Hey I feel like crap today I am feeling really down In the dumps I have a lot on my mind . I woke up and i had diarrhea I hate when I am sick It makes me feel terrible. I have a lot of problems going on right now. I can't even see my best friend Its breaking my heart. I don't know what to do. My mom said that we cannot ever see each other again. That my best friend is the reason I have so many issues.. My best friend has always been there for me since high school. What should I do I feel like just giving up. Any advice would be really helpful thanks.