Dealing with insensitive people

I had an awkward encounter at the gym today with the mother of a girl I was quite friendly with at school. We chatted about my job and hers, and the fact we're both married. Then the cringeworthiness started.

Friend's mum: "So, do you have any family yet?"
Me (chanting "argh, argh" in my head): "No, not yet."
Friend's mum: "You shouldn't wait too long. Are you planning on starting a family soon?"
Me (through gritted teeth): "Yes, hopefully soon."
Friend's mum: "I keep telling my daughter, now is the time, before you turn 30. You career girls these days, you wait so long-"
Me (teeth now having gouged chunks out of own jaw): "Actually, I've been trying for two years. We're starting fertility treatment for my polycystic ovary. I had an X-ray of my tubes last week. It's really very distressing."

Perhaps I shouldn't have bitten her head off. But perhaps people should think before they speak.

In other news, we took the cat to the vet's last night, where they drew some cells out of his lump to send off for analysis. We won't know anything till the middle of next week. I'm not going to dwell on this because I basically can't deal with the prospect of him being taken away from me as well right now.

Hubby's back is apparently "a little better" so I plan to lift his no-sex fatwa tomorrow. By force if I have to.