Hmmm I had a similar thing with a midwife during my antinatals. I had hardly any belly until 24 weeks then I popped & had massive stretch marks. I had several comments about how putting on weight will cause that & keeping the weight down would've prevented it.
I think yes we may be a little oversenstive sometimes, but there is certainly quite a bit of insensitivity on their part too. they see so many mums they forget I think.