Pregnancy gives strangers (and friends, aquaintances, relatives, co-workers) an excuse to give you advice. Old women will tell you if the baby is a boy or a girl, and how long you have to go. Friends without children will tell you how their brother's cousin's son-in-law's sister had a really horrible case of constipation and start a one-sided discussion of anal ointments with you. Those more-well meaning will ask you lots of questions about how you are feeling and offer to carry that stack of papers for you (even if the stack is only half an inch thick). And the worst ones will come up and want to feel your tummy, which is fine unless you value your personal space, as most people do these days.