I suffered a concussion in february and still have symptoms. i went to a party today and had sex. while we where having sex i almost past out. and now i have a big headache. now i am scared to fall asleep as i think i won't wake up ?

Brain Rest Needed: It sounds like Post Concussion Syndrome with which it is not rare to have symptoms w/ increased pulse or blood pressure and/or w/strenuous activity. Activities at the party may have worsened this: drinking, drugs, caffiene, missing sleep, anxiety, loud music (for some), prolonged activity. It sounds like this is very unusual for you - I suggest you see a doctor if you are not feeling better.