Thought it was worth passing this on for anyone else who needs an Anti D jab (ie if you are Rh Negative & pg). I had one today & nurse was about to jab my arm but as I have very puny arms she looked a bit concerned. I mentioned that last time I had the jab in my buttock - her advice was for a buttock jab as its less painful if you have puny arms like mine as there is quite a bit of fluid injected. Doesn't really matter where they stick it (so to speak) provided its into a muscle. So if you have thin arms - ask for a jab in the bum !