Hi, if his nappy area was covered then there would not be a risk. Also your tummy is too high up as the virus would be in the area below that.
I think he did have skin-to-skin contact with my private area though.. but obviously it was skin not covered by his nappy so his upper thighs/outlines of his buttocks were exposed, can you catch the virus via contact with that skin?
Also would the drs have known/suspected it if it was a herpes outbreak?
Its really highly unlikely he contracted herpes from this esp with no sore present and genital area covered. You might want to talk to the doctor if they suspected it just for you pc of mind.