Been injecting for many years, on TRT. Have been doing Sub Cutaneous (belly) for a long time now, as well. Tonight, I had .3 of .4 mL down, and got a weird sensation I'd never experienced before. Felt like pin pricks in several spots all over. Couple places on the head, shoulder, thumb. Thumb had a burning sensation, too. Sounds like a nerve got tweaked, but like I said, never experienced this before. Anyone?