I injected meth into the crook my arm, the vein on the inside closest to my body. I used a brand new needle, cleaned the area properly, slowing inserted the needle at the right angle, drew back to ensure that I was in the vein, afterwards I slowly injected the meth, with no bubble, pain, or burning of any kind. Then I slowly pulled the needle out and immediately applied pressure to the site for about 30 seconds until the bleeding stopped. Then I noticed a small bump where I injected, there was no redness, no pain, it was soft. Why did that happen?