Ever since i've been on nuvaring i can't orgasm! is it because of the nuvaring or is something else wrong? i used to be able to orgasm all the time

Possibly: Hormonal contraceptives like the birth control pill and NuvaRing do tend to interfere with libido (sexual desire and drive) because they suppress ovulation and fertility. Fertility does drive libido (in other words you tend to be most interested in sex when you are most fertile). This is usually not so noticeable as losing orgasms, but you could be more sensitive than average.