Not noticable at this stage.
You might try the transillumination technique; take an led flashlight, cover the edges of the glass with some tape so the beam is more focused, then you`ll need to turn the monitor on it`s back and shine the light through from below (two people will be better to do this), you might see the hemipenes.
There`s an article by Dr. Danny Brown in an issue of the "Biawak" journal, I don`t have the issue number to hand, but type into your search engine "Transillumination technique for sexing varanids", it should com eup with details.