6 1/2 years out and gained 20 lbs and STALLED. Can't get the scale to budge!

I've gained 20 lbs in the last 5 months and have gone back to protein shakes and eating high protein foods.  No carbs except from bananas and healthy foods and STILL am not losing!  

I've never had to watch what I eat like this, I'd just cut out carbs and it would drop back down but this time it's just hanging on and not budging.

 I'm SO depressed and frustrated by it and it's causing me really bad anxiety because the scale isn't moving and I do NOT want to stay at this weight.

Anyone have any ideas how to get the scale moving again???