its possible that you went through a blood vessel which would explain the bruising and the soreness......wait a while, it will go away, you can keep warm compresses on it if you want, but i think its just a normal pain, i had the same problem with QV and Ttokkyo winnie, they both hurt the first time injecting into a specific muscle, but then for some reason that area got used to it and it didnt hurt much after the first couple of injections. Try shooting into your glutes or quad, or even split up the ml between both delts next time. That should reduce some of the pain.