Quoting renee duncan:" So this is TMI but yesterday I went to the bathroom and found blood. I freaked out because i had thought ... [snip!] ... my cervix thinning out? This is my first child so I'm not all that sure what to do and the blood doesn't look bright red. "You can loose your plug all at once or little by little. It could be a sign labor is starting soon for you my friend. You may not spot if your cervix is thinning (at least I have never heard of it happening) but I am not a professional on that one. If it continues throughout the day or becomes more that just light spotting I would go back in or call the doctor.