Um I'm not really sure why but you should look online to see what it could mean. I guess maybe hydrate yourself more and eat good food. Try to ask your doctor and see if you're okay. I don't believe that, that is a symptom of the virus so I don't think that you have the virus but if you're really worried get tested and check! Stay safe, hydrate yourself often and eat good. Also, maybe try to go out for a five minute walk and see if you feel better. I hope you get better!!
Step-by-step explanations: sometimes 5 times (number) is 250 but in this case your teacher did not tell you to multiply it by 10 but instead multiplying it by 5
