Why aren't I losing weight?

Do you weigh all of your intake on a digital scale?

Oh girl...
Okay first of all if you're working out you need to be fueling your body with the right foods.
You can't be working out, and then eating junk. You need to have a healthy diet PLUS a good workout.
Also, 1200 is hardly enough for your body to function correctly to help you lose weight. I hit a plateau after eating 1200 for a few weeks, and then I upped it to 1500 calories and started losing weight again, and crazy inches off of my body. Then once that stopped, I upped it to 1800 calories and started losing weight rapidly.
less isn't always better. And for Gods sake do not eat less than 1200. 1200 is low enough as it is. When people are in comas in the hosipital they don't even feed them that low. They at least give them 1500 which is about as low as most of everybody's bodies can go without hurting themselves. Up your calories and see if that works. And remember just because you have more calories to eat does not mean you should eat bad quality food with higher calories just to meet your goal (From experience)

Okay, first thing - yes, a calorie is a calorie. That said, you're going to be able to work out more effectively and therefore burn more calories if you are properly fueling your body. Yes, ice cream, Starbucks cakes, and frosting are okay sometimes, but if you're sacrificing room in your diet for more nutritionally sound choices to make room for lots of treats, you are just robbing yourself of good fuel. Increase your protein and healthy fat, decrease the amount of empty carbohydrates. I'm not saying carbohydrates are bad, but you need to find balance. This may or may not have anything to do with your weight loss, but it needs to be said. Out of love, of course.

Second, yes, you need to get a food scale and weigh your portions and everything you are putting into your recipes. If you're just picking something out of the database you could be WAY off. Here's what I do: Use the recipe tool, and weigh each ingredient as you add it to your recipe. After cooking, weigh all of the food. Divide that weight by however many servings you intend it to be. Weigh out one portion. There you go, accurate. It takes a little bit more time, but you could be eating 300 calories without realizing it, which adds up quick. And when you have that recipe again, you know how much a serving is, and all you have to do is weigh one out.

Third, are you weighing things like your cheerios and strawberries? For packaged foods, there is usually a weight in grams that is one serving on the nutritional facts. For generic things like fruit and nuts, you can search "[Food Item] USDA" and select "100g" from the serving size drop-down list and use the weight in grams of your food there. It might not add up to much difference for your fruit, but if you're going by measure for things like almonds or peanut butter, that can be a huge source of hidden calories.

Finally, you may just not be eating enough. I went through a period where I was chronically under-eating along with overexercising, and while I lost weight, it was very sporadic. I would stall for weeks at a time before dropping any weight. Now that I have increased my calories, I am losing at the same overall pace, but much more consistently. 0.2 lb here, 0.6 lb there, etc instead of dropping a pound and a half every once in a sweet while. And I feel much better. If you were losing weight successfully at a higher intake, why did you drop it?

Also measure yourself and check if you are getting smaller, not only lighter.

Your protein and fiber seem low. Have you calculated your macro targets? If not, go here, this thread covers that... and more:
http://www.myfitnesspal.com/topics/show/1080242-a-guide-to-get-you-started-on-your-path-to-sexypants

Otherwise, please don't feel you have to cut out foods you love to succeed. You just need to find the correct balance. This is also an excellent article:

http://impruvism.com/flexible-dieting-basics/

I always gain weight when I initially start working out and in the past it has always deterred me and I would stop all together. I agree with what several people have said about it possibly being not enough food. Keep in mind when you workout,, especially weights, your body will retain some water and you will gain "weight" from new muscle mass. Key word is weight not fat. I would switch to measuring rather than weighing as well. the scale can be so depressing and inaccurate at times.

You've lost quite a bit of weight so you have been doing something right. Why did you lower your calories when you started exercising? That doesn't make sense to me. :ohwell:

If you are gaining weight, then perhaps you are eating more than you think and/or underestimating calories consumed.

I suspect you are overestimating your exercise calories too. Do you use a HRM or do you use the MFP database, or some other method of calculating?

I haven't read all the replies, but my guess from looking at your journal is that maybe you aren't logging everything? E.g., you counted a pack of Lean Cuisine salad stuff, but not the lettuce/veggies or the salad dressing. Pancake mix, but not butter or syrup. Try logging absolutely everything, down to that five calories of lettuce, and see if it makes a difference.