Wouldn't the more selfish thing be to bring a child into this war-torn world and terrible economy via a high risk pregnancy to get back into someone's will? UGH! I am livid for you as well. She way overstepped her bounds there, and I would be just as happy to never speak to her as long as she kept that attitude.
ETA: I'm shocked that she was shocked. I mean, you've been married for HALF YOUR LIFE and haven't had kids yet, what did she think, you were waiting for your 40s? Take a hint, for crying out loud.