I just shot about 20-25 units of approx 1mg/ml methamphetamine solution. It was previously micron filtered and kept in a sterile vial about 3 weeks ago (unfortunately not with any preservative, just regular water). I had been shooting this with no issues almost daily since then. I used a sterile insulin syringe, and swabbed the site before injection.
Unfortunately I missed a shot in the crook of my elbow just now. I have been putting a washcloth with hot water on it and massaging since immediately after the shot, and I just took some azithromycin. There was some pain upon pushing the plunger down (stupidly I just kept pushing instead of re-registering), and it formed a small lump at the site, which seems to be right on top of the vein under the skin. I know the best option at this point is to get medical help, but barring that, is there anything I can do besides continuing to apply heat/pressure to the area? Realistically, what do you think will happen? Thanks.