gaining weight and can't figure it out

When you set up your data, did you include your exercise level? If you did your exercise calories are already figured in the calories they give you. If you then log your exercise you are doubling up your calories. I put down that I wouldn't exercise so when I log my exercise I can then choose to eat those calories or not. I usually try and eat at least half of them.

I am no expert.

Could your calorie burn goal be wrong? Have you gone to see a doctor? Thyroid? Low body temperature? Hormones out of wack? Peri-menopause?

How much carbs are you doing? Perhaps a lower (not no) carb diet might be better?

I did P90X last year. It is about as intense of a workout you can get. And, it was 1700 calories a day for women and 2,500 calories for men. And, I lost weight.

Talk with your doctor. Something is going on.

are you sure you're accurately recording your caloric intake? it's hard to recall everything you eat but remember that every little thing adds up. if you really are eating less than what you burn off, there's no reason you shouldn't be losing weight, much less gaining it...UNLESS you're putting on a TON of muscle mass...are you getting jacked?

The eating back the exercise calories may not be for you. It doesn't work for me. Only you know your body and what feels right. Play around with the calories some, maybe only eat half or none of the exercise ones back. Also maybe switch up your routine a bit, your body might be "used" to your running.

So, for the past three years you've been eating what you think is under 1200 calories? If this is true, your body may now think you've discovered a rich food source is saving everything it can. Continuing with this, it will take time for your body to adjust before you start to lose weight.

If this is not true, it could be that your body is not accustomed to working out, so you are retaining water. Again, this will decrease with time.

Either way, keep with the program.

open you diary so we can see whats going on

It would be easier to advise if you could open up your diary. Are you eating breakfast? Do you eat a lot of processed foods? Are you drinking plenty of water?

My original calorie goal was 1910 with out exercise. I never ate the exercise calories back until I read you should. So week 3 started eating my calories back. I run 4 days a week and burn approx. 450 calories per workout with one day being my long run and I burn 750. Gained 2 lbs that week. Gained another 1 this week....and the scale keeps going up. I cut my calories to lose 2 lbs per week which end up being about 1400 calories plus exercise calories. In 2 days I have gained another 1.5 lbs.

After reading your question and looking at your profile I know that you're a 36 yo woman and you're aiming to lose only 36 lbs (a relatively small amount). Without knowing how tall you are or any other extenuating circumstances I think that 1910 calories sounds like a very high caloric baseline. When you signed up and filled in your activity level, did you include your workouts in your amount of activity? If so, then you're double-counting your work outs. Your "normal daily activity" should NOT include your workouts... It should only include the activity that you do as a regular part of life. If you work in front of a computer in an office, then you would put "sedentary". If you're a stay-at-home mom or a salesman, you should list your activity level as "lightly active," etc, etc.

I hope this helps.

I was only able to take a quick look at your diary - but one thing I would take a look at is your sodium level - you can add it as a 6th column to the food journal. Too much sodium can wreak havoc

I'd say to give it a little more of a chance. If you're like me, your metabolism takes a while to adjust to changes. So, if your metabolism is re-gearing, you may gain weight for a few weeks, then you'll lose.

Something fun I learned, muscle don't weigh more than fat. BUT They do hold water while they're healing. especially if you consume to much sodium. Try measuring yourself. are you losing inches? If so, kick the scale to the curb buy a hot pair of jeans two sizes to small and go for gold!

Sorry for my last post - I was falling asleep as I wrote it, so it came out as mostly gibberish. I was trying to say that you should add the sodium column to your diary so that you can keep track of your intake. By my quick look, your sodium intake seemed like it would be high. Currently, you only have 5 columns, and since the diary can handle 6, you won't have to move anything you're currently tracking.

Here is an old thread that you may find helpful in sorting out your MFP calories...
http://www.myfitnesspal.com/topics/show/61706-guide-to-calorie-deficits

Best of luck!

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Edited to add:
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Someone mentioned possibly tracking your sugar intake. I think this is great in theory, but isn't very helpful in practice. That's because what we should really be tracking in processed sugars, but the MFP diary lumps natural sugars(from fruits, etc.) and processed sugars altogether. So, if you have a single piece of fruit in a day, you're likely to be "over" your sugars - when really, you're not over the sugar level you should be concerned about. Our bodies can handle the natural sugars better than it can the processed ones.

http://www.myfitnesspal.com/topics/show/238282-700-calories-a-day-and-not-losing-redux