OT about having children

I have an almost-4-year-old and an 18 month old. I plan to have a third baby within the next year or two. I'm slightly terrified of going through all the physical changes again, but that's actually a big part of my motivation to lose weight and get healthier right now. When I started tracking my calories I was 35 lbs heavier than the day I got married and 28 lbs heavier than when I got pregnant with my first child. I figured if I kept making excuses that I couldn't do it b/c I have 2 kids to take care of, I'd NEVER get the confidence to do it w/ 3. So I started now and so far I'm doing really well - I've lost 19 lbs so far, I'm 9 lbs away from my pre-baby-#1 weight and 14 lbs away from my wedding day weight. I want to lose at least that next 9 lbs before trying to conceive again. And I've been thinking a lot about what to do while I'm pregnant to keep from losing control. First off, I'm going to stay active here on MFP. There are groups of pregnant women that encourage each other and try to help each other stay on track. A few days ago I saw where someone posted a link to a calculator that takes your BMR info and then tells you how many calories you should be eating during each trimester for the recommended pregnancy weight gain (just a little bit extra in the first, a little more in the second, and the most extra in the third trimester) - when the time comes I plan to stick very close to those numbers - I will set my limits manually here on MFP so it's easier to track. You can set MFP to tell you how much to eat to gain 1/2 lb per week, but I think I'll set my own calorie limits based on that calculator that was posted b/c it makes sense that you'd need more in the third trimester than in the first. And of course when I exercise, I'll eat more. As far as cravings are concerned, I'm going to do my best to keep healthy, nutritious snacks around the house (fresh fruits and veggies, yogurt, etc) and continue making the majority of my meals at home. Yes I got cravings a lot when I was preggo but I would much rather eat something that's conveniently already in the fridge or cabinet than have to lug my pregnant butt to the car to hit a drivethru, so I'm going to keep lots of 'good stuff' in the house so I know I can stay home and have a good snack. Basically, I'm going to approach pregnancy a lot like I'm approaching weightloss, just with a slightly higher calorie goal. Why change something when you already know it works?

Adopt.

Hi there, I'm 15 weeks into my first pregnancy, does anyone have that calculator for calories? I'm just using my original plan in MFP but going over by about 400-600 calories a day based on what my MD told me. He just was randomly guessing though based on my pre-pregnancy weight and height so I'm not sure it's right. I feel like 1800 calories is too much for me at 150lbs (5'4"), although I've been used to 1200 calories a day while on my weight-loss quest before. The MFP FAQs state that if I change my profile calorie needs, it will adjust everything that I've entered since I started in January 2012. I don't want to lose that archived progress because I want to start back up again post-birth.

I guess my other question would be, how do I determine my caloric intake if I were NOT pregnant? Seems like a simple answer but when I went to the (US Gov) website for help, it just told me I'm borderline obese and need to cut down on calories. Since I'm pregnant, I need to MAINTAIN and remain healthy (consuming enough calories) for our little fetus. Any suggestions?