I have 3 kids (ages almost-12, 8, and 4) and I am 30 weeks pregnant with my 4th..I haven't directly announced it here until now, but I feel it's important to answering your post. Okay, get ready for my novel LOL....
I need to first tell you the physiological realities of pregnancy

...My back aches, I am tired, I can't workout as much as I used to, I have to go to routine doctor checkups, I've gained weight, and I am slowing down. Yes, it's wonderful to feel the baby move and know that he will be in my arms soon, but don't forget the realities. After baby is born I will have to get up every 2 or 3 hours to feed him and change him, I will have to cut back on working out temporarily until I heal, and so much other stuff. Don't get me wrong, I love this baby, but it's not all roses and rainbows. LOL

I just feel it's important to say that it will be a lot of work during and after pregnancy..and don't forget there's colic/fussiness, dirty diapers, and tantrums...and much, much more as your child grows up.
Yup, it's not easy going from couplehood to babyhood. The first child is such a big transition with baby always coming first often before the needs of your relationship as husband and wife - unless you have a nanny, of course.

I tell my kids
you're ready to have a baby when you can accept you will no longer be number one. That isn't to say that you won't have time for your husband or your workouts, but you need to plan, plan, plan...
I think the best way to describe how to manage life with a baby is to plan and organize your time and be prepared for inconveniences. For example, when your child is ill you might have to take time off of work or your workout and change your plans. You should also discuss with your husband what and when he will do things, like help with the childcare when you go to the gym if your gym doesn't offer daycare, help to prepare meals, do housework, and that kind of thing. My husband is too busy to help out so I am on my own, but he does what he can. Teamwork is so vital. It would help to have sitters and family lined up, too, so you can have a break and have alone time with your husband which is very, very important. Like I said, plan, but also have alternatives.
I agree with Scarlett when she says
Don't let people discourage you from what you want. Yeah some women get pregnant and get fat and stay that way but many others don't. I live in suburbia and I am one of a handful of wives/moms who actually keep in shape. If you prioritize and make time to take care of yourself then it will happen. I workout at the gym, at home (I do my cardio and I exercise to videos/DVDS), and I take my kids swimming, jogging, biking, and all that..I plan to still be active when baby is here because that is just how I am.

So don't be too worried about losing the weight because if you continue to prioritize health and fitness then it will come off if you work it.
Anyway, here are some links for you if you are serious about TTC (trying to conceive):
www.ivillage.com
www.childbirth.org
You might also want to babysit an infant to get to know what you're in for...
Good luck in whatever you decide!
