Please help me im wanting to end myself???

My baby is 9 months and for 2 months I've been getting 6 hours sleep every 48 hours she wakes up every 3 hours. I cant take this. She crys all day long, I cant take care of myself to even feed myself most days. I literally cant do anything. The father is in prison and my family that I live with doesnt help me AT ALL. His family hasnt even met her before and never even texts or calls or anything. I feel like I want to just end myself because this is making me crazy. I never and I mean never get time to myself to even be able to enjoy a shower. Please please help me. What do I do? I've tried controlling her naps, she just doesnt stop crying and im talking she can cry for 2 hours non stop just throwing a tantrum dripped in sweat. I cant even clean or anything. She falls asleep like twice during the day and after only 20 minutes of a nap wakes herself up. I cant take this anymore....i feel like i cant be a mother. I dont want to ever get to the point i hurt her out anger. Im angry and i cant do this i really cant. Im crying my heart out right now.