My Husband Just Got A Severe Headache Followed By Dizziness,

my husband just got a severe headache followed by dizziness, clammy skin, and he eventually throws up and has to quickly have a bowel movement. This all occurs within an hour. He had this about 2 weeks ago. He slept for about 10 hours then was fine. He doesn't drink, smoke, etc. He's 35 and has never really had headaches either. This just seems very odd that it does this in the same order, etc. any ideas