Hamstring area on left leg started throbbing painfully at work, since getting home i have gotten a deep chill and a mild headache?

Unusual pattern: unless you have an injury or unusual activity overusing your hamstring. You should take your temperature if you are feeling chills. If you have a fever, if the headache is very severe or it seems to increase with head movement, you should be seen today. If you want a formal consult (after taking your temperature), please go through the paid portal.