I ve had several small blister like bumps that I absent mindedly scratched at while concentrating on something else. Naturally they began to bleed. It is something about the way my blood looked and behaved that has me worried; The blood seemed very thick to me, and when looking at it there were dark strings that resembled fibers or hairs that actually moved. Is this some optical illusion? The blood clotted extremely quickly and it was these fiber things that clotted first.