I'm co-sleeping... and I don't want to!

My 3.5 month old used to be a great sleeper. She would sleep 10-12 hours in her own bed. Well this past week she has started waking up 3-4 times to eat and after her last meal she refused to go to sleep unless she was in bed with me. Now she refuses to sleep at all unless she is with my husband or myself. So my options are fight with her all night, or bring her into bed with us all night. I don't want to co-sleep, but this momma is tired!