Jill Duggar Dillard revealed that she suffered a miscarriage while pregnant with her and her husband Derick Dillard's third child. The "Counting On" star, 30, addressed her fans in an emotional video posted on YouTube Monday where she detailed the complete journey.The video starts with Jill and Derrick finding out they're pregnant and then telling their two sons, Israel David, 6, and Samuel Scott, 4.