I'm pretty sure my cat allergies were giving me 3-day headaches when one of our cats that I'm most allergic to would sleep in our bed and then I'd end up with t

I'm pretty sure my cat allergies were giving me 3-day headaches when one of our cats that I'm most allergic to would sleep in our bed and then I'd end up with the same pillow she slept on. I kept the cat out of the bedroom and no more asthma or headaches for 3-4 months now. So perhaps allergies?