Should i go to the doctor? I can't eat cause i think of grief?

i had a problem with a friend 5 days ago but everything is ok and put behind in the past, but my chest feels sensitive and i feel like i don't want to eat, i also have a small cold, no coughing just congested nose and when i spit its yellow spit, everything else is ok and my throat is good, its day 5 of my cold but i idk if its grief? no one died but am still kinda hurt, but everything is good so idk why i feel this way, should i go to the doctor?