Do you often experience discomfort in your jaw? Does your jaw feel uncomfortable after eating a big meal or after speaking for a long time? There could be a number of reasons your jaw might be giving you trouble. It is not uncommon to have discomfort in your jaw from time to time; however, if it happens frequently, it can be cause for concern. Frequent jaw tenderness or discomfort is a warning sign that there is something more severe happening in your mouth.