I'm feeling a bit worried about my wife's situation. She's three months pregnant, just at the start of her 14th week. We live in a building where our apartment is on the third floor, and there's no lift. Every weekday, she has to go down 60 steps in the morning to head to the office, and then back up those 60 steps again in the evening. Is it safe for her and the baby to be doing this every day, or could it have any negative effects on her pregnancy? I'd appreciate any advice on this.