Yep. Between my own almost 18m old getting her molars, and the other 11 and 19 month olds..... Earplugs and copious amounts of wine are getting me through. LoL
I use Hy's Teething tablets. They dissolve in a tsp of water, and you just give it to the little one from the spoon. I know that they work, because they help my daughter almost immediately.
Definitely talk to mom/dad about what else can be done. Both you and the child are suffering!!