Any advice on getting my daughter to sleep? My daughter has barely slept in almost a week. Today has…

Any advice on getting my daughter to sleep? My daughter has barely slept in almost a week. Today has been the longest stretch and the poor thing is so exhausted. I've tried swaddling, gripe drops (she has slight colic), her swing, nursing, walking get around, driving around, and even tried letting her cry it out. I feel like a terrible mother because shes so overtired and I can't help her.....