Hi Makenzie,
TN is Hell! Mine is caused by a knot of arteries around the trigeminal nerve before it branches, found by MRI, so it's made worse by anything that affects bloodflow - temperature, acupuncture and especially GTN spray.
What meds have you been put on? I have some relief from oral Ketamine dulling all my nerves down mixed with opiates.
I hope your scan comes back clear and your meds make life easier.

Dave.