i'm not allowed to use tampons?

i'm 14 about to be 15 and i'm not allowed to use tampons! i started my period at 13 and i've only used a tampon once before secretly because my period was so heavy one day and that's all my school had but it felt so much better than pads. i'm not allowed to use them because i was told by my mother you can't use them when you're a virgin. is this true? i also do sports like cheer and track. and sometimes my periods get heavy and they last long sometimes so wouldn't tampons be best? is that stuff about virginity and tampons true?