Pregnant cat is due any day !!Help!!!?

and her temp has been 98 for 2 days and then 97 today..what is going on? and what do i need to do...she is farting nasty every thirty min ive been keeping up with it..shes never had kittens before..what could b wrong with her? ive seen things about its bad if their temp is below 100 for more than a day but no explanation y..i relly want to know y!!