It sounds like Sciatica. If you rest, it may go away. It can come back from time to time too. Mine has now lasted a year. Read up on it....and if it doesn't go away, you may need to see your Doctor.
it could be Sciatica, read up on it. my nan got it about three years ago. you need to rest, if it goes away it is possible it could come back. if it does or you feel woozy then go and see your GP, they will know the treatment etc. my uncle got this too but he has epilepsy fits from time to time and he has had strokes. if it gets worse or you have the same problems as my uncle then go see a doctor asap. bethX