Sore tongue and mouth after eating

I had Wendy's 2 days ago and after eating it my tongue became very sore, like it was burned. My food was not even hot though. Ever since then my entire mouth became sore like it was burned such as the top of my mouth and the middle of my tongue. To top it off i have a cut on the tip of my tongue. Is this pregnancy related? Or was the food bad? Its painful and extremely uncomfortable. Does anyone know any remedies for this type of thing?