Yesterday I picked up my prescription for the P17 shots. The pharmacist was so sweet, she said that it was a joy to prepare them for me, because she knew that they were helping a sweet little baby. She apologized that the needle was pretty large, but she felt it was necessary since the solution is oil-based.
I went back to work and asked our nurse to give me the shot. She had me ready for some pain--but it didn't really hurt. And it wasn't/isn't sore afterward, either. So, yay.