Observing fever and Not taking medicine?

I have been trying to tie mind with breathe lately and successful several times through the day. But today I have fever, and I am finding it very difficult to observe, I just want to this feeling of weakness to be over, I know it is not permanent, But yes one more thing **i realized today, the importance of healthy body**, My friend suggested me not to take medicine as it is also my Sankara (to me its very stupid.) He also explained that human body raises it temperature to kill some bacteria and by taking medicine you will stop its process. Should I not take medicine in fever and just observe what is happening inside. I want to keep following the Shila's and not also get rid of fever.