I found green mold on the threads of a vacuum sealed jar. Is it safe?

The jar was still vacuum sealed when I opened it (100% certain). The mold wasn't inside the vacuum sealed part, just on the threads of the jar. It is that army green color mold that you often see on bread. I ask because I notice it after I ate what I poured out of the jar. Is it ok to eat? Not really worried, but if I'm going to be sick I can just throw it up now.