Stuck forever!

San
Hi people! 
So I began dieting and eating healthy to lose weight since January this year. Everything was going fine----I came down 12 pounds from 148 pounds within 2 months. But since all of March and April, I'm stuck on the same weight (135.5 pounds) 
I just don't understand why I can't get rid of this fat! I could so easily lose 12 pounds but after that my weight won't budge!! Any help is duly appreciated 🙂