I Just Went To A 9 Days Cruise, One Day

I just went to a 9 days cruise, one day of the cruise, after walking a while, I had terrible headaches the rest of that day, felt nauseated & vomited, felt better. then today I had the same symptoms, I haven't vomit but with headache, starting from the front, & my neck muscle hurts on the back of the side, felt nauseated & have headache for a few hours now! I hardly ever have headache nor vomiting symptoms. I'm a 68 years old chinese female & my GP just gave me a great health report. a month ago, I did had the same problem for one day & felt better after vomiting. My husband did not have any issue so I didn't think it was the flu since he drank the same water from my cup. thank you, the headache now is on forehead & side of neck & feel a little chill. Virginia