I'm having more migraines than normal the last couple of weeks. could they be caused by my allergies?

Possible: If your nose gets very congested, it may trigger a migraine. The swelling itself can induce headache of a different kind as well. Although there is scanty studies in the literature re. this relationship, I have seen it often enough in my practice to the existence of this link. If your allergy is really bad, you should see an allergist.