Test Prop, tightness at injection site, normal?

[SouthPhilly]

Okay so I started my cycle yesterday and I had shot in the glute and now I'm being paranoid. My test prop is from an underground lab that I know people LOVE and have great gains from, but someone told me that they knew someone who grew a big cyst or abscess and that apex uses a lot of alcohol.

So, in the site, I don't know if I'm just feeling a pocket of tight muscle from where I shot or if it's something else, is it normal to feel a tight spot, not so much a bump?