Weird and sudden symptoms the past 2 months? Help please?

Was there a fever accompanying those symptoms? Did your doc check for appendicitis? It could be that or the anxiety. Usually stomach issues like that indicate an infection such as any form of food poisoning or viral infections. However most of the time these things are accompanied by a fever or some sort of chills which you did not mention. Another possibility is pregnancy. But anxiety is definitely a cause of all those symptoms as well. Especially in cases of extreme anxiety.