S.,
Nutritionists are VERY expensive if you don't have a medical problem, like diabetes or something. If you see a nutritionist just for a healthy eating plan, you will be paying for it out of your own pocket. If you can find a someone(a friend, a co-worker, whomever) for both of you to motivate each other to go walking together at least three times a week for 30 minutes each time, that would be GREAT. You can go fast walking in the morning before work (just wake up 30 minutes earlier than you normally do) right in your neighborhood. Obviously, you will have to walk very close to home since your kids will still be sleeping.
About eating healthy. It appears that you view eating healthy as a chore. If I am right, then you should try to view eating healthy differently - as a yummy way of life! For breakfast, you should eat oatmeal and berries (and an egg or some yogurt for protein that will hold your hunger longer). You should put raw sugar (the all natural healthy sugar (brown in color) made from cane juice - I get mine at Wal-Mart in a big clear container in the sugar section) in your oatmeal for a no-guilt sweetness. Go to Sams or Costco and buy a big bag of frozen berries. You should put 3/4 cup to one Cup of berries on your oatmeal. For lunch, you can eat a turkey sandwich (with spinach and perhaps peppers) and either mustard or avacado on whole grain bread, and a pickle. Or, you can eat a PB&J sandwich on whole grain (which is what I eat almost every day for lunch), and a piece of fruit (you're supposed to eat an apple a day). For a mid-afternoon snack, you can have some whole grain crackers with low fat cheese, or another piece of fruit and some cheese. Dinner should be lean meat with either brown rice or whole wheat pasta, and veggies. I LOVE making my veggies. I marinate them with extra virgin olive oil and a little balsamic vinegar and pop them in the oven on low broil for 15 minutes. It is DELICIOUS! I do it with broccoli, asparagus, carrots, zucchini, squash, and eggplant. Or, sometimes, I sautee them. My point is - healthy foods are DELICIOUS, so try not to look at it as a "chore." Instead of potato chips, for example, buy Baked Lays. They also sell baked cheese puffs (for you or your kids). Give your kids whole wheat pancakes or waffles with banana or berries for breakfast (put the all natural sugar on their berries, too). Give them PB&J for lunch (or cottage cheese with fruit, and whole wheat crackers with cheese or cream cheese and jelly). Have them eat what you eat for dinner.
You just need to reset your brain's thinking about food. Please know that healthy foods truly do taste great, so don't look at your new eating healthy plan as a sacrifice! If you have a craving for ice cream, you can eat ice cream! Just eat it no more than once a week, and buy the "no sugar added" kind. It really does taste good! Whatever you crave, just alter it a bit. Dark chocolate is good for you, as long as you only eat 1 or 2 squares per sitting.
Weight watchers is a way to go, where you count points. I did that and it worked great for me. However, counting points is a pain. If you just eat healthy and have some portion control, then you won't need Weight Watchers.
If you have any questions, please send me a personal message. Best of luck to you and your kids on your journey of a healthy way of life!!