Insect and Spider Identification: please tell me what this is, 1 by Kdh81

Kdh81 wrote:
Hey…a bunch of these came crawling out of my sweatshirt pocket right after I took my dog for a quick walk…when squished white goo came out. Have no idea if they were in my sweatshirt prior to going for walk or that they crawled up my leg into my sweatshirt some how. Don't see anymore in my apt. Please help so I can hopefully go to bed tonight! Thanks! (by the way I am in the Charleston, SC area if that helps with identification)