Despite our previous guess that we had a B/G mix, our 20-week ultrasound revealed the pending arrival of twin boys! Most likely fraternal, but our doctor said we will not know for sure until birth. The little guys were doing great in the ultrasound, kicking and wiggling away. All organs looked good--clear views of "definite boy parts"--and hearts. They are small comparatively so we will continue to watch their growth. Our 18 month old daughter will be one month shy of 2 when they are born, and will have her hands full as a big sister--but perhaps not quite as much as Mom & Dad!