I've had a migraine for a few months now and a small lump on my head should I be concerned of the two?

See your Doc. If you have a migraine that is not its typical presentation, nor is it being controlled with the usual measures you use, please see your primary provider or neurologist for evaluation. The small lump on your head may or may not be related to the on-going migraine.
Temporal Migraines. There is a small nerve on the side of the head just behind the side of your eye. This nerve, when irritated can trigger a migraine. If the lump is in this area it may be neuroma, or scarred nerve. www.themigrainereliefcenter.com.