Weight preference

I told myself that before we go back to Philippines,I should already shed 7-9 kilos of body fats.But I guess I might fail my goal.How can I lose weight fast?I only have 3 weeks left before we go and still never achieve my weight preference.I guess I just face the criticisms that family and relatives will throw on me.I know I will be hearing again those "you are so fat,big,you look like a pig" words :( It hurts me so bad when I hear those words but what can I do.No one is big in my family,all of us are skinny or just in a normal weight.For now,I already lose weight about 4 kilos but it's not enough for me.I should be around 53-55 kilos at least.I still have to shed 6 kilos more but I don't have much time now.It's really hard to go on diet,my weight sometimes go down and sometimes go up.If only I could lose weight so fast and easy...