Hi, i went to a festival on the weekend, since coming home on sunday I have had a head spin that wont go away, i have drank water, slept and eaten and it is really starting to bother me. Its only when i stand up but i also cant seem to focus on something for long either and my vision is slightly off. I was wondering if illegal drugs such as, speed, ecstacy, MDMA could have caused this, and will it go away or should i see a doctor?