Welcome to Healing Well. Have you talked to a Neurologist at all about this? It is difficult to say if this is actually migraine or not. I do not have any medical training and can only speak from my own experience. However, there are some things that could fit migraine and some I am unsure about, so would suggest you speak to your Doctor or a Neurologist.
I have Allergic Rhinitis and when it is bad it can bring on a migraine attack, it might be interesting to explore the if there is a direct link between Migraine and Allergy in that way - I am not referring to food sensitivities here, just where if affects the upper respitory tract!
Please let us know how you get on.