could try adding more protein and fat.
could add carbs and subtract fats.
there are a bunch of things you could do. i think the problem is the calories are really low. i'm 185 at 5'5" eating the same calories. if you think you lowered your metabolism, take 3 weeks at maintenance calories (during this time carbs and protein should be higher with less fat). when you go back to the cutting calories, remove carbs and a little protein and add fats in their place.
theres good advice on this post by a bunch of people, could try a few of the suggestions and see what works.