What should you do if you cannot fast? Does pus or water coming out of a boil break your fast? | ...

What to do if you can't fast? You will be surprised to hear!| Will tears enter the throat break the fast?|Fasting, will cataract surgery break the fast? If the fast is broken for any reason, should you fast all day? If pus or water comes out of a boil, does the fast break?