Accidently swallowed chewing gum, would my upset be because of that?

Usually ok: Usually there isn't a problem as the gum will pass harmlessly through the body. However, there are rare cases of chewing gum bezoars which have occurred causing esophageal ; intestinal obstruction (http://pediatrics.Aappublications.Org/content/102/2/e22.Full). Lack of absorption of sorbitol in sugarless gym can sometimes lead to gas, loose stools and abdominal pain.