i am 17, female, i had a throat infection which i took antibiotics for, i had no bad reactions to the medication . as i am coming closer to finishing all my perscription. i get a bad dizzy spell, about a day after that my period starts and i have really bad cramps . another day goes by and i feel fine then the next day my dizzy spell came back and has been occuring daily since. i v had a total of 3 dizzy spells. i dont know whether its from my meds, my period, or the fact that i was taking a strong multivitamin and am now no longer doing so