Hi there & Welcome to 3FC =)
Congratulations on your work so far! How great
Hitting plateaus is so frustrating, but you've made it past one and you can certainly make it through another.
If you look around you'll find that you certainly aren't alone in any of it.
I guess I'd start by asking is your goal weight reasonable for your height and build?
As long as it is, then it's time to look at your food/exercise. Are you eating enough? Or is it now the time to drop 50 calories a day from your usual in order to take off the last pounds? Do you need to do more exercise or add a completely different activity into your routine?
It will take time to experiment. It will take time to figure it out, but regardless of the outcome KEEP AT IT. You're doing fantastically =)