Unbelievably bi**hy

Ugh... I just need to vent. My almost 6 month old only has ever slept in her swing. I could never get her in her crib and she slept great in the swing so I left it. Now I can't even get her in the swing... she will only nurse to sleep and won't let me put her down. I have become so bitchy with my husband because I am getting no sleep and no alone time with him at all. Not to mention my fuse has been so short with my 2 boys as well. I feel terrible... I can't ever do anything with them because I have to hold my daughter while she sleeps or she just cries and cries. I really don't like the idea of letting her cry it out but I'm at my wits end. So tonight I'm just going to do it.. I'm going to let her cry and hope for the best. It has been between 12 and 1am before she falls asleep lately anyways so what's it gonna hurt right... please someone tell me that letting her cry it out will be ok because I need a change or I'm going to go insane!!!