It took me a long, long time to lose my last 5ish lbs! I know how frustrating it is! For me it was a lot of patience and slightly upping what I ate, with all the exercise, sometimes you do need to eat a little more to start losing again. It sounds properly crazy, but it worked for me! I'm trying to lose another 5lb now and I'm expecting it to take a while
it's always harder when you've not got a lot to lose!