I had one amp that had a little opaque bubble in it.

I drew it into the syringe and pinned my right delt w/ it. This was a week ago, on the 25th.. My shoulder still feels like I got hit w/ a baseball!

There is a hardish lump, but no bruising. When I pinned my left glute, it hurt and had a hard lump, too.

All the other spots I have pinned have gone w/o a problem. The last two injections were in left and right glute, which was the second time for both, and there was no problem. Both, especially the left went easier the second time...

Is the shoulder lump normal and the opaque bubble nothing to worry about?

I did a bench and shoulder work out the next day after the pinning the right delt, would that have an effect on the lump, tendernes still lingering?