This is about a week after first time pinning. Was tender and swollen now it’s just a small marble sized hard knot with bruising. Is this an infection? I read it could just be a nicked blood vessel that caused bruising and the knot is just inflammation. It’s not squishy like an abcess. No fever or other issues.
No infection.
But if you’re concerned, see a doctor.
Its not infected, I had the same results in my bicep too.
I just stuck to my glutes or quads. Never an issue since.
You pinned too low on your delt, 2-3 fingers below that tip shoulder bone. 1/2 inch needle in all the way, inject slow and steady