Good Turned Bad

I was at a friends house and a couple of my friends including me were tripping for the first time. It was fun and games at first. i was having the time of my life and i was running around. but then i after about two hours i started seeing demons and hearing sirens and i lost total control of my mind. Everything i was thinking happened. I was predicting bad things. It almost turned suicidal. It was pretty horrific . People kept asking me if i was ok my mind was totaly out of control and i couldnt turn back. finally the trip ended and i relized i was just worried i was making a fool of my self and that someone kept telling me i was bleeding.