Re: Reintroducing breastmilk to a toddler while pregnant.
Welcome to the forum and congratulations on the baby to come!
If you had fast letdowns the first time round, there's an excellent chance that they were caused by an oversupply of milk. If you had oversupply with baby number 1, there's a good chance that you'll have a lot of milk with baby number 2. Oversupply means you make more milk than your baby needs, and when you're making extra, you can usually pump out quite a bit to share with a toddler without affecting the newborn's supply.
But I feel like I'm getting way ahead of myself here- at this point, all you really need to do is to enjoy your pregnancy, stay healthy, look for a new nursing bra, maybe buy a pump if your old one isn't in good shape. But don't actually USE the pump during pregnancy. That's a huge no-no. Pumping during pregnancy doesn't bring your milk in faster, doesn't improve your supply in any way, and is actually a risk because pumping/nipple stimulation releases the hormone oxytocin and oxytocin can bring on contractions. The only reason a woman should pump during pregnancy is if she needs to induce labor, and then she should do so only under medical supervision.
Once your baby is born, leave the pump in the box for the first 4-6 weeks. Focus on making sure that your newborn is nursing well and that your supply is roughly in sync with the newborn's needs before you start introducing more variables into your breastfeeding journey. Once your new baby is nursing really well- gaining weight, has a comfortable latch- then you can start pumping once a day, after the baby's first morning feeding. Pump once a day for a week or so, and see how much milk you're getting. If you!43 getting enough for your toddler, no need to add in more pump sessions. If you want more milk for the toddler, start pumping after a second nursing session, and stick with pumping 2x per day for a week. If that still doesn't get you where you want to be, pump 3x, etc.
But right now... Relax. Enjoy the pregnancy, and don't worry too much about breastfeeding. Okay?
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"