My weight loss has stalled. Help!

did you take your measurements when you started??? If so take them again and see if you are losing inches

Need more details... Can you open your diary? Let us know how much/what you are eating?How are you calculating your calorie burn? Eating exercise calories?

Is your diet in check? A lot of the time after we have lost some weight we tend to let our diet slack a bit. Are you still weighing all solids? Using measuring cups/spoons for liquids? Are you counting every little thing you eat/drink (condiments, cream/sugar/milk/etc in coffee/tea, dressing on salads, oils used with cooking, etc)? Are you tracking your sodium and getting enough water? Extra sodium can cause you to see gains on the scale.

Have you switched up your workout routine lately? That can cause your muscles to retain water for repair which causes you to gain weight temporarily. Are your muscles sore from your workout? If they are you are most likely retaining water for muscle repair. Are you eating your exercise calories back? If you aren't you may not be eating enough. If you are you may be overestimating them.

If you have been doing the same exercises for a while switch them up. The more you do something the less your body will work as it can get used to the exercise you do. Always switch things up every few weeks. Change the exercise... change the intensity... change the time. Are you taking any rest days to let your body repair itself?

How long has it been since you have lost weight? One week isn't a plateau. One week could be a lot of things. Your weight changes due to hormones... due to what you eat... etc.

Weight loss is not linear. You won't lose every week. Some weeks you will, some weeks you will stay the same and some weeks, regardless of your effort, you will gain. It is a natural part of weight loss. I would bet it isn't muscle unless you are eating close to or above your maintain calories. Building muscle on a calorie deficit is almost impossible to do.

Are you weighing at the same time, under the same circumstances each week? Is your scale in the same spot as it was before? Is the scale on a hard, flat, level floor or is it on carpet/uneven floor? Does the battery need to be replaced? Are the feet of the scale completely clean? There are a lot of things that will affect the scale results just based on where the scale is. Is the scale moved frequently? BUmped, kicked, etc?

1. Can't see your diary.
2. Can't see your weight.
3. Can't see your goal weight.
4. Can't see your starting weight.

So, completely generic advice.

TDEE (don't eat over)
<---Eat here somewhere.
BMR (don't eat under)