So, it's great news that you've seen and been diagnosed by a neurologist and good that you've had an MRI to rule out other nastiness!! But to be honest, this does not sound anything like clusters!!!
However, it does sound more like one of the hemicranias.....the good news is that gabapenten is an effective pharma solution in most cases!!
It also sounds somewhat indicative of Trigeminal Neuralgia but I'm unsure about treatment options for that disorder.
I would most definitely try to get a 2nd opinion, preferably from a certified Headache Specialist Neurologist!!
Another long time member here, @CHfather, is a supporter of his clusterhead daughter who lives near DC so he might be able to chime in when he sees this thread and give you some direction on finding another neuro in your area.
DD