Hello. It sounds like you ve had quite a time. Your history is suggestive of vasovagal syncope, which is the most common cause of fainting. This episode doesn t necessarily indicate you have a serious medical problem. Vasovagal syncope occurs when your body overreacts to certain stimuli that trigger a slowing of your heart rate and a drop in your blood pressure, which subsequently leads to fainting. (Vasovagal syncope is what causes a person to faint at the sight of blood or following a severe emotional event.) I do think you should report this episode to your doctor. He/she is more familiar with you and is more qualified to decide if further evaluation is warranted. (He can also take a look at the laceration on your head to see if it needs further attention.) One final comment: you may want to avoid eating or drinking large amounts of dairy products in the future. You could be developing a bit of lactose intolerance, and I suspect you don t want to repeat this experience any time soon. I hope that helps!