Extremely bad COLIC im about to lose it?

Im a single mom, my ex cheated etc.. anyways my three month old daughter has extremely bad colic, she cries all night im not kidding, maybe an hr or so shes asleep but by the time i get relaxed again shes up screaming. i work 12 hr shifts in a hospital and have not slept in days probably almost a week if I really wanted to know. I have tried gas drops, colic calm, gripe water, soft music, dim lights, rice cereal, chamomile tea, swing, swaddle, bouncing, rocking, similacs colic and sensitve formulas, holding her, mages, warm baths, heating pads, carriers, fresh air, letting her cry etc. Im at a breaking point. I cant keep up like this. No one seems to be able to help. Someone Please please be my saving grace and tell me anything thatd help her I seriously cant continue like this