The hemipenal bulges on a male bearded dragon will be two bulges, one on each side of the tail following the vent.
The hemipenal bulges on a female bearded dragon will be one single bulge in the center of the tail following the vent.
It can be hard to tell until the dragon has grown past 6-7 inches in length.
With that said, I looks like you are a proud parent of a male.