I can't eat or sleep with toothache! Help?

Pain. Try taking an otc anti-inflammatory like Ibuprofen if you have no contra-indicating health conditions. See your dentist asap.
OTC Meds. And call a local dentist for an appointment asap... Your problem is only going to get worse, really fast if already you can't eat or sleep.
See a dentist. See a. Dentist ASAP. Try OTC pain medications for temporary relief until you get to the dentist.