So Lately I've Been Experiencing Severe Itching Inside The Lips

So lately I've been experiencing severe itching inside the lips of my vagina and clit but I'm not so sure as to when it actually started and when I scratch it little dirt clumps form and I know I take showers daily so I'm not sure if it's just that I don't wash good or because I shave so much down there that my hairs are growing back so thick that it's irritating my vagina or it's something serious. Me and my boy friend been having sex and I feel as if the itching started after our first intercourse but like I said I'm not really sure when it started exactly. Please help.