Maybe this will give you some motivation. I am also 5'2" and after giving birth I was up to 175! The day I found out I was pregnant with my second I cried. Not because I didn't want a baby because of course, I did...but because I thought I would gain another 40 lbs. I really watched what I ate with my second and I ended up weighing about 170-172 right after the birth, which was pretty good news.
About a year ago, I decided to try the Atkins thing and I pretty much stuck with it. I found once you get going...it's REALLY easy to just stay with it. You WILL lose those cravings and you WILL start feeling better. Give it an honest 4 weeks. Seriously...make a calendar and just go day by day and count down (kind of like you probably did with your due date of your baby)
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In a short 3 months I was down to 130 which was actually a pretty good weight for me. I maintained this (even went down to 125 for a time) for about 8 months. I started getting "lazy" in my eating and am now back up to 150 but it's my own fault, so here I am again. The difference is this time I KNOW I can not get lazy again. THis is the way I will have to eat for the rest of my life. Oh yeah, I'm sure I'll eat pasta, bread from time to time but it will be very restricted or else the weight is guaranteed to come back.
The point I'm trying to make is that I have been where you are and you CAN do it. It's going to be even easier for me this time because of all the support here. I few times this last week I have caught myself thinking that maybe I don't really look all that bad at 150, etc. A few times I SWEAR the mirror made me looked really thin. But I would come here and read that other people are going through the same thing, that other people have had major successes in weight loss as well as health, that other people are also struggling with certain things. You know what it made me realize? It made me realize or aware that I'm not alone. That's a really good feeling. I don't know quite how to explain it but it's good.
I also know that if/when I have a bad (eating) day I can come here and get advice/suggestions or even a little sympathy.
The online community is an amazing thing.
Here's to all of us out there trying to better ourselves!!!