Hmmm... the 20th is pretty far away.

Could you go to the hospital (regular admission, not inpatient) and ask for an assessment? I think Canada has socialized medicine, right? If you don't have to pay for the hospital, it may be worth the trip. You don't want to enter psychosis, but you also don't want to experience brain zaps, severe depression, nausea, vomiting, headaches, etc from reducing your antidepressant dose too much or too fast. So, I really, really think you should get a dr's opinion to be safe, if that makes sense.