So you have confirmed oral hsv2 by culture? I ask because oral hsv2 is rare, and when it occurs, it doesn't typically cause recurrent outbreaks. I just want to make sure you've had the proper diagnosis.
Assuming that you did get diagnosed correctly, I really, really hope it doesn't mean you haven't kissed your son in his entire life. And bird's don't transmit herpes.
What we do know about oral hsv2 is that it doesn't shed a lot - like it rarely sheds.
Shedding rates: (and you can find all this in the herpes handbook - https://westoverheights.com/herpes/the-updated-herpes-handbook/)
HSV 2 genital 15-30% of days evaluated
HSV 1 genital 3-5% of days evaluated
HSV 1 oral 25% of days evaluated
HSV 2 oral 1% of days evaluated
So 1% of 365 (days a year) is about 3.65 days you shed per year. If you don't have an outbreak, chances are really good that you weren't infectious.
Also, herpes isn't transmitted by saliva, but by direct contact with skin. For oral herpes, this means direct mouth to mouth contact. If you kiss your son (or anyone) on his cheek, you won't transmit it, because the skin on his cheek is too thick for the virus to transmit it.
Oral herpes also don't typically occur on the roof of your mouth. It usually occurs on the lips, or just inside them, or in or around the nose. I'm wondering, if you do have oral hsv2, if everything you think is herpes actually is.
You can read more about all of this in the Herpes Handbook, written by Terri Warren, one of the world's leading experts on herpes. It's free - https://westoverheights.com/herpes/the-updated-herpes-handbook/
Let us know what other questions you have.