I think we all fluctuate within a few pounds. My evening weight is often 3 or 4 lbs higher than my morning weight. When I lose a lb, it's fairly typical for my weight to jump back up a couple lbs the next day and then slowly work it's way back down.
If you are fluctuating within the same range for several weeks and you are still trying to lose weight, here are a couple of strategies:
- Just continue to wait it out. A few weeks really isn't that long to stay at one weight; it barely qualifies as a plateau. Sometimes the water in your cells just needs to catch up with your fat loss before you can start losing again. So a perfectly reasonable course of action would be to just keep at it for a few more weeks and see if your weight loss picks up again. Now that you are within ten lbs of your goal weight, I think you are going to find that your weight loss is no longer linear or consistent.
- Change something in your exercise routine. Replace an exercise you are currently doing with something new, add more exercise, or increase the intensity of your workouts. Or maybe you are exercising too much and need to cut back a bit.
- Change your eating habits. What kinds of foods are you eating? Consider changing your ratio of fat, carbs, and protein. Or reduce or increase your calories.
Without knowing your exercise and dietary habits it's hard to give specific advice. The first time I plateaued, it was because I was not eating enough for the level of exercise I was doing. I added 100 calories per day to my diet and started losing again. The second time I plateaued, I got things moving again by cutting back my cardio (I'd read an article that the level of cardio I was doing wasn't necessary) and cutting my calories back to their original level (they'd crept up by a couple hundred more per day since the first increase). Also, if you've lost a lot of weight, at some point you may need to adjust your calories downwards to continue losing.
If you want to tell us more about your current exercise/dietary habits, we can probably give you more specific suggestions.