My Dr Has Prescribed Lyrica Capsules 150mg For Pain In

my Dr has prescribed lyrica capsules 150mg for pain in my back and legs caused by arthritis sciatica my legs feel very heavy all the time and now I have a lot of pain when walking short distances that is why she prescribed these for me, it has helped a lot but makes me a bit light headed so I am frightened to drive the car just incase I am pulled over by a policeman for breath testing