How to prepare to bounce back after pregnancy?

Question

I'm not currently pregnant. I don't intend on having a baby for 3-4 years yet. However, I want to know the best things I can do for my body in the meantime in order to bounce back quickly postpartum. I obviously have several years to prepare so I'm in no rush. I don't currently workout but I eat very healthy and I'm at a good weight. But I know pregnancy can cause weight gain and many women just don't have the time or energy to really work on themselves the way they could before having a baby, after pregnancy. I anticipate this'll be me 😅😂. 
So far the best thing I've heard is to do lots of core workouts and pelvic floor exercises to help shape and strengthen the muscles for during and after pregnancy. I was wondering if that's true, or if there are other things I should also be working on while I've got the time and energy? How does pregnancy affect your abdominal muscles? Can they go back to how they were? Is cardio important? 
I'm very excited to have children one day but I'm very self conscious about how I look already and I'm honestly terrified about even BEING pregnant let alone what my body will be like after a few kids.

Answer

Honestly if you are “terrified” of what your body will look like after having kids you should maybe seek therapy especially if you are already anxious about your postpartum body image years before even having kids. Pregnancy changes your body in irreversible ways. Your rib cage expands, your feet get bigger, your hips wider, boobs sag, a lot of womens butts sag due to the posture you have to have holding a child. There are obviously things you can do to correct some of the changes over time but the best thing you can do for yourself is learn to accept and move your body as is.

Answer

To be honest, you have no idea how you will respond after having a baby. Rather than worrying about “bouncing back” physically, mental health should be your bigger concern because postpartum depression is a very real thing that has devastated families. 
Some women immediately lose the baby weight after giving birth. Some never lose it. For me, breastfeeding helped me lose most of the baby weight within a couple months. I didn’t start working out again until I felt ready to, and that wasn’t until about 8 months postpartum.

Answer

I think core exercises are a good idea, your abdominal muscles are the ones holding baby, so if they're strong, you have less of a chance of developing Diastasis recti, most especially if you do exercises that target the tranverse abdominus. Pelvic floor exercises are definitely a good idea. Breastfeeding kinda wrecked my boobs though, and there's no exercise that will help avoid that

Answer

@GlowGPT please help me with this topic!