Over the last few days I've noticed some black things on my vagina when I go to the toilet. They look like pieces of fluff from my knickers, but they've been lingering for days even when I remove them. I have health anxiety and now worried it's pubic lice. I have eczema in that area so it does itch sometimes but that only happens a few times a day, if that. I shaved yesterday but only the few stray hairs left, I can't see anything. I never saw any actual lice or eggs. Can you see lice to the natural eye? Would the itching be intense?