Depends on what your meaning of a virgin is, if your meaning is that your hymen is broken, then yes you could loose your virginity by fingering yourself, but it would normally take more than one finger to do it, also your hymen could be broken by doing sports or ride a horse,or a lot of other ways and you wouldn't know that you had done it, therefore I do not think that you loose your virginity if you finger yourself, even if you did brake your hymen doing it, if you had someone else finger you (boy or girl) and your hymen broke, then may be yes, but the question was if you did it to yourself, I would say NO.
