My thermometer messed up so now what do i do....

Ofcource my luck this morning my thermometer was acting up so i took my temp twice with in a min and half of each other and i got totally different temps so now i don't know what one to use or if just throw away the temp one said 98.40 and the other was 97.73 so they are very off. I took my temp again with another thermometer an it was 98.3. What would you do?