Thanks for your reassuring replies. It seems like the reaction is normal (but ugly!). Fortunately I delivered in a private hospital so the injection was given in the hip, not the arm. I freaked out a little this time as my first child just got a bit of a bump but no scar (and I was immunised for TB as a teenager in my home country and never scarred).
For those concerned about the cosmetic aspect, BCG is given for a reason - the incidence of TB in HK is fairly high and more so in other parts of Asia. We are expats but plan on being in HK for a while longer so opted for the BCG.
For those concerned about the cosmetic aspect, BCG is given for a reason - the incidence of TB in HK is fairly high and more so in other parts of Asia. We are expats but plan on being in HK for a while longer so opted for the BCG.