Remember the song,
Pick yourself up, brush yourself down, and start all over again.
You have done so well, try not to let this blip spoil your joy, you can do this, reading this site there are lots who have plateaus, and I can imagine how deflating it must be. But it is only a plateau, so dont be too disheartened.
Remember what you have already achieved and you can do it again if you dont let this blip sidetrack you.