Any time you get stuck at a weight it means one of two things, either that is a normal weight for you or you need to change something about what you're eating/exercising. In your case you are technically in the "normal" range for BMI, granted you are on the higher end of that scale.
I'm not sure what you're doing for a diet but tweaking one or two things might be the answer in your case. If you want to give me a rough breakdown on what you eat I could help you better.
"It takes 4 weeks for you to notice your body changing, 8 weeks for your friends, and 12 weeks for the rest of the world. Give it 12 weeks, don't quit!"
** my weight loss ticker is STILL not working, should be at 144! **