I also am afraid it's MS that I would be diagnosed with. I'm 66 and got the TN ABOUT 3 years ago. Its progressively gotten worse, and now I have a major flare up that lasts most of the day on and off. The pain is excruciating.. I'm on Gabapentin and not sure it's helped the TN pain, but has helped my sciatica pain! I've heard Tegretol works. I'm calling my neurologist tomorrow for an appointment ASAP! That is where you need to start, as this only gets worse. So sorry you have this too.
You want a neurologist that knows TN and MS. Ask them how many patients they've treated with TN. There is a special MRI for TN. They should prescribe an anti-seizure drug to control the TN pain. You need to slowly increase the drug until the pain is controlled. Docs without experience in TN don't seem to know that. Best of luck to you.