Having been pregnant while the first was a baby, and now while the other two are toddlers, I think it's actually easier when they're a little older. S was 9 months old when I became pregnant with T, and he didn't walk until he was 14.5 months... so lifting him was the only option if we wanted to get somewhere! You'll work out easier ways to do things. If your daughter is heavy, make sure you brace your pelvic floor muscles before you lift her down from places.

Fit in naps around your toddler. Take time out at the beginning when you're nauseous and exhausted. Start 'training' your little one to do things by herself now - I'm 'training' T to sit next to me for some cuddles instead of always launching herself onto my lap. It's early days yet, but I figure if I can get her into the habit of little things now, then it won't be a shock when she can't suddenly sit on me for a hug as there's a baby there, you know?

Hope you have a happy and healthy 9 months!