I've only had it happen a few times, but it's still a few times too many! There is one person who won't even say hello to me at the shops unless DH is with me, and a couple of months ago she walked right up to me (shock number 1) and asked 'how is bubba' while putting her hand on my belly. Yuck... I didn't like it one bit. I mean, why do it? It's not like they would do it any other time would they? "Ooh you have a nice looking belly there/ ooh are we losing/putting on weight??" My body, my space, my baby, just stay away I reckon!
I said to DH someone should make up some shirts saying 'hands off' or 'don't touch'

Nic