Tricyclic anti-depressants, such as Nortriptyline, can help with the actual pain as well the depression. All of these meds take time to build up in your system and you have to increase slowly so hang in there. Hopefully they will bring you some relief. And TN does have a mind of its own. I can be in agony one day and pain free the next. For me it comes more in isolated attacks that can last a day, a week or a month. Use that pain free time to relax and refocus. Stress and anxiety exasperate TN so take care of yourself and be aware of that.
Find a dentist that understands and is compassionate. My dentist always saves my worst area for last so that if pain starts we are finished. Sometimes we skip that area all together. And I have cancelled many appointments last minute because I was in pain that day. He always does full xrays so we can address any problems quickly. Some people use baby toothbrushes for brushing or skip some days and use mouthwash. For some people the peppermint is a trigger so you need to find a different toothpaste.Having physical touch of the area being a trigger is difficult. Obviously our oral health is imperatively important but it is easier said then done sometimes. As you move through this you will become more aware of what triggers your pain and hopefully this will enable you to have less pain. Common triggers are physical touch of certain areas, wind, cold, barometric pressure, stress, anxiety and lack of sleep.
Unfortunately it takes some people years to be diagnosed because many Drs don't know of this condition. You are very lucky if you have a Dr that knows, understands your pain and wants to help you. Some people keep a diary of daily pain, locations and anything that could be a trigger. It can help you and your Dr. immensely to have this.
Keep asking questions and learn as much as you can.