Is it possible Ive suffered a stroke?

I think maybe I'm just really tired. Two or three times over the past week, I've woken up with a splitting headache, but they subside once I wake up and take some pain reliever. But lately I've felt disoriented and sluggish. But, hey, that probably has a LOT to do with the fact that I just spent the past sevn days on a cruise ship, swaying back and forth and eating JUNK and not sleeping well. I'll see how I feel in the a.m. Ive just never feltl this stupid after a vacation. I dont feel weakness on one side of the body, I can pronounce my words and I can read an og clock. Its just those headaches. Those were unusual. Must've been something on the ship causing them.