Reevaluating goals

Tomboly1

So I started MFP in January and have lost 40 of my 90 lb goal! I feel pretty good about my loss. I am healthier can do more activity and have been maintaining at least 200-300 min of exercise each week with no problem. The last two months however, I have not lost any weight. I have just fluctuated back and forth between a few lbs. Besides a change from night shift to day shift work schedule, nothing else has really changed. I am starting to think now that maybe this is a healthy weight for me and I should keep up my exercise and watch what I eat.
Has anyone else experienced this or gotten to a point in their weight loss where they felt they needed to reevaluate their goals?