Hi Nancy,
Congrats on the pregnancy. I just had a miscarriage at 6 weeks and hadn't yet gained any weight. I'm a WW lifetime member (lost about 45 pounds a few years ago) but unfortunately I've gained it all back and then some. I hear you...I got so sick of counting points. Anyway, lately I've been following the food pyramid, b/c I feel like it focuses me more on healthy eating than on calories. With WW, I'd focus more on points and not so much on vitamins, etc. Go to www.pyramid.gov and explore the site. You can type in your own weight and height and get a suggested plan of how many servings of each thing to eat. You can print it out, make copies and record your food on it if you so choose. They also have a section for pregnancy where you can do the same exact thing and it'll adjust your servings for pregnancy.
Other than that, during the several weeks when I knew I was pregnant, I was just trying to make every calorie count. I still tried to eat like normal, because you aren't eating for two. At most you only need 200-300 extra calories, and if you're overweight, you may not even need that early on (talk to your doc. to be sure). The only thing I changed in my diet -and I mean regular diet, not weight loss diet - was I was having a glass of chocolate milk almost every day (skim milk & Hershey's lite syrup) because I was craving that a lot. Since I'm already overweight by 50+ pounds, I was really trying not to gain in the first trimester.
It doesn't sound like you want to count points anyway, but if you do, I think it would be safe to continue using a modified version of the WW system, as long as you're not doing it to lose weight. The losing weight part is what's unsafe. Some people follow WW to maintain their weight, so if you were getting 22 points to lose weight, you'd probably need 25-28 points to maintain. So to gain healthfully during pregnancy, maybe 30-32 points would be a decent target. If your body seems to be asking for more, eat more, but at least you'll know that if you're eating 70 points a day you're going overboard. Monitoring your calories to make sure you're not going hog wild isn't unsafe, especially if you're like me and already overweight. I say that because if I were to go crazy and gain 80 pounds during pregnancy, when I'm already 50-60 pounds overweight, well, that's just as dangerous -increased risk of gestational diabetes, pre-eclampsia and all that fun stuff that comes with being overweight and getting pregnant. So all I'm saying is, if you choose to count points or calories just to monitor yourself, be sure to give yourself enough extra points that you're not losing weight and most importantly, be sure you're getting all the proper nutrients. There are some great "What to Eat When You're Expecting" type books out there to consult.
Good luck!