Answer by  
                                                                                          Mary15 (347)
                                                            
                          
                          
                                                          You most likely burned an area of your tongue without realizing it, bit your tongue, cut it and developed a sore or it developed after you ate something too spicy or overly sour. It is nothing to worry about as taste buds generally replace themselves once a week. Just make sure not to eat anything that would further irritate it.