ive been through 2 cycles, and almost 3/4 of a way through my 3rd is when i finally start aspirating (i kno, its late but at least i do it now) i injected into my delts, stuck my self w/ tha needle, then pulled back on tha syringe, a small bubble of air came in, saw no blood so i injected, was it alright that i injected tha bubble back in?