I was playing brushing my hair yesterday and right below my hairline on my neck i felt something weird. It felt like some kind of bite or irritation, i can't see it, but it feels crazy. I also found a bite-like one on my hand. It blistered alittle today and i popped it. it is sore to touch but other than that it don't hurt. The one on my neck doesn't hurt or itch. my boyfriend did just kill a spider a few nights before so i keep thinking it's a spider, i've never been bit by one, so I wouldn't know, any suggestions?