Any chance doctors are on this app??!

So this all started Thursday. The only thing I had to eat was a honeybun. And stuff to drink of course. My appetite just went away. Friday I wasn’t hungry at all. I wasn’t feeling myself. I just didn’t feel right. I made homemade mac n cheese (I NEVER turn down mac n cheese) and I just couldn’t eat it. It was making me sick. I’ve lost 3 pounds as of right now. Today I have had a couple bites of something. I am not sick. Today was the only day so far my stomach growled. What do you guys think this is?