Wish to become slim again

Before,I was very slim.I only weighed 38 kilos before I arrived here in France but after 8 years of being here,I gained about 26 kilos.That is a lot!I'm sure,there are many women like me who have a hard time on losing weight after pregnancy.Some women do the dieting and exercise or maybe some of them are using weight loss pills to lose weight.It's really my goal to shed at least 10-15 kilos.I really wish to be slim again.Hope by next year,I'll be wearing clothes size between small and medium and not the extra large ones.