Regarding a likely malicious material inside of my scab

Patient: I have fallen exactly two days ago on a rocky surface and received a small cut. Shortly after that, I got into my car and drove home to put some alcohol on it. By the time I pull into my driveway, I look down and notice that some manner of…string happened to get underneath my scab. I don’t have the faintest idea of what it is, and all I know about it is that it is green and foreign-looking. Will this be detrimental to my health?

Symptoms: There is foreign material inside of my scab.