tired

i am 36 weeks 4 days & i am completely tired & drained of being pregnant. i really thought i had the hang of it & was in a good mindset but im not. my back is always in pain, i always feel sick, i cant sleep, im just a mess & im ready for my daughter to come out. ive tried everything to give me some type of relief, im currently sitting on a birthing ball. what can make these last few weeks easier? im so drained