Sometimes you will feel very sickly and tired. But you need to do so many things and accomplish tasks. What do you do? See a doctor? Yes, but no.
Maybe you should try putting mind over matter first! It definitely works. It’s our mind that controls our body, it’s our minds that can tell how we will really feel. The slightest pain can go away if we push ourselves too without even noticing that slowly, this pain has faded away.
I know it will be hard but at least try while you can but if you can’t really take it anymore a doctor’s advice won’t be so bad:)