Just tried to get to 'send us your tip' from the homepage and it isn't loading. It's an actual helpful piece of advice, as well (not something I have all the time, tbh).
Pregnant and travelling by public transport? As you get on, drop your scarf on the lap of a passenger who has their head buried in a book. When you say 'sorry' they will look up, spot the baby on board badge/bump and give you their seat. Even if they are too rubbish, it's more likely someone else will realise you need to sit down and offer you their seat.
(This happened to me the other day - I was the person with a seat and my head buried in my kindle. I did wonder whether said p/g woman had worked this out as a technique rather than actually dropping her scarf accidentally - if so, well done her.)