I Had A First Time Episode The Other Night While

I had a first time episode the other night while standing in my kitchen... I started getting very dizzy and all I remember is everything went black and I was shaking dramatically while trying to hold myself up, but ended up falling on the floor. It took about 5 seconds of laying there till I came back to, but I couldn't remember much and every time I stood up I was very dizzy and feeling like I was going to pass out.... What happened to me?!?!?!?!?!?!