Odd thing

Well I just was getting into my hammock to goto sleep...
since im trying to save $$ I keep the heat turned down....
socks on ... Small fuzzy blanket over the feet.. And pulled a sleeping bag over top of me that hangs down...After about 10 sec I got a very sharp pain in my left foot.. Right at the heal...At first after the initial jerk reflex I thought it was just a nerve twinge... But it hurt way to much... Then not likeing spiders... First thought was eekkk spider...Threw off the sleeping bag and carefully pulled back the blanket...No spider... Pulled off my sock... Blood... And I have a cut in my heal in the shape of a "c" 1/8 inch big.... I searched the blanket, sleeping bag, hammock, and my sock, even the floor... Nothing... Inside my sock there was blood but no hole in the sock ... For the size of the cut 1/8 inch im thinking that there should be something...It was def. more of a stab or poke then a bite... No swelling or anything like that... It was very sharp like stepping on a tack... Well I just wanted to write this so I wouldn't forget... Sweet dreams.. Peace... and my ass is freaking out as I fall asleep... :)