I haven't had sex for 8 months. My pubic area started itching a month ago. Its not itchy all the time it itches at night and mornings.. There's a white crusty stuff on the tip of my pubic hair... And I also got like a sesame seed shaped one.. It itches when I scratch it it starts to have bumps and kind of swells and there's a dandruff looking stuff on my hair.. I don't know if its crabs. Please help me. I don't know what it is