Last week when I injected 1 cc of fina into my bicep and something very strange happened. The pin required slightly more force to get it in than usual. It was as if I had grazed a "dense" spot from the injection the week before. It was also more difficult than normal to push the plunger down. However, I have experienced this before without issue. Immediately after injecting, my bicep got very tight and had a very hot sensation that moved down to my fingertips within about 30 seconds. My fingertips then tingled and burned for about 15 seconds. This was accomplnied by the usual slight tren cough. My bicep proceeded to stay very tight and swollen (as if fully pumped and then some). My entire arm (forarm to delt) has been swollen since the enjection (4 days ago). The skin is thick (as if there is a bit of liquid under the skin). I think it is going down a bit every day. I don't think (read; hope) it is infected because all of the effects happened immediately after the injection (within seconds). I reason that there was not enough time for an infection to develope and then me notice it. It all just happened right away. I want to be clear that I am a very experienced injector, and have injected my bicepts hundreds of times (I did aspirate- no blood). It was an unused needle shooting fina home brew that I had shot before without issue. The injection spot is not discolored but very slightly warm (nothing close to as harsh looking as, say a t-400 or prop injection sight would look like). Any ideas?