Sleeping Problems, HELP!!

Abi
So.. for about a week and a half now my LO (8months) hasn't been going to sleep but has been fighting it. I get her to fall asleep and as soon as I put her down she is wide awake calling for me.. I can't just let her cry it out due to our living situation.. it doesn't matter when she goes down or if she forces herself to stay up, she wakes up almost immediately every time. My hubby sleeps like a rock and hadn't even realized we have been co-sleeping, that being said I really need to fix this. I haven't had a decent night of sleep (I say decent, like my old sleep pattern before this started..) and I'm a person who needs sleep or else lol. I'm changing her schedule but if there is anything else you could suggest, please do...