Some female health issues!?

So yeah =(, for the past few months since I started using a good ole fashion razor and started shaving, "down there." I would itch, but not badly down there. I have not had sex in seven months, so have not really been active. The itching started after I started shaving more and more, but it does not go away. I have not shaved now in three weeks, and the itching seems to only get worse. I notice that other parts of my body are beginning to itch like my upper back, my left ear itches, my hairline itches, and my clitoris is very sensitive.. the hairs are not fully grown, and I thought I had pubic lice at first because I saw these tiny white specs in my pubic hair for a while, and I read somewhere that it goes away if you shave or use RID. I shaved, and don't see the white specs anymore, nor did I ever notice them moving. When I read articles it says for lice pubic lice that the specs would move.. i'd sit there and stare and notice them not moving. Now I don't see any specs, but past few nights it seems the irritation has gotten worse. I have been waking up around two am unable to sleep because i'm itching so bad. I'm itching over my pubic hair and over my clit, and then parts of my body like my back. I am scared, I know I don't have any serious std's because i've gotten myself checked with a pap smear and some blood tests. I am terrified :(.