I've been having pains in my tummy, bloated, sensitive to some smells, &major headaches is there a chance i'm pregnant?

Migraine: You can take a home pregnancy test to rule out pregnancy. However, it sounds like an episodic migraine. It is a serious and complex neurologic disorder. Headache, vertigo, visual disturbances nausea, sensitivity to light or sound, dizziness, neck pain. This condition must be professionally managed. Often use of Excedrin will lead to medication overuse headache. See orofacial pain specialist.