waking up in the middle of the night and vomiting.

I woke up at about 2:30 feeling very dizzy and sick, motion sickness?

I walked to the bathroom to vomit, last nights dinner. I ate the same food as them.

Did I eat it too fast?  because I was in a rush to get somewhere but I have never known of this ever. It really worries me but at least I can get out of swim training this morning :).  Please, my mum is a doctor but she is asleep........

I went to bed at 10ish.  I was very tired and was lying on my bedroom floor for most of that night.

I don't like this bad breath.

I don't want the stomach acids ruining my teeth.

Please, please, PLEASE HELP ME

P.S 

it is also comforting to know that I am not the only one suffering from this.