3rd baby and being asked if this baby was planned

Does anyone feel that they have to justify their pregnancy, My husband and I are having our 3rd baby, and since I’ve announced it a great deal of people have asked if it was planned??!! That’s out of line to ask anyway and shouldn’t be asked at any time, but I never had it with my first two, it’s like people think that because it’s our 3rd it must of been a mistake? Even my doctor (not Obgyn) asked me if it was planned. I’ve always wanted 3, but I’m getting upset about constantly being asked if this baby was planned :(

We own our house, don’t accept government assistance (not that we’re eligible for it) and we’re married adults