Hello Busy Moms, I need some help and some friends

I am new to this fitnesspal. My twins are almost 2 (I have 1+ twins) and I have been struggling to get rid of this baby weight !!!!!!
I was in the best shape before I got pregnant and resumed running 5 weeks after they were born. Since their birth I have done a half marathon and numerous 10 and 15K's and added weight lifting (chalean extreme) to the regimen a few months ago. These 20 pounds aren't budging!!!! I am active and I am strong and weight lifting is helping with tone. I need to concentrate on eating and calorie counting. I think that is what I struggle with the most. I have lost a few inches but the scale is not moving. Help and support appreciated!