Thank you for your beautiful post and welcome to this forum.
It is very understanding you have been worried about your son and it’s great you reached out here to this always supportive and understanding community.
I understand you worrying, however, I would like to talk about few very, very important things that stand out from your post:
You say you that love your son dearly and every single word in your post supports it.
As nervous and worrying as you have been, you welcomed the news calmly and being accepting.
Another thing that speaks volumes about what a great parents and family you are is the actual act of your son telling you that he was gay. How trusting, loving and believing he must be in you Guys as parents, to be sure that you were going to react as you did: calmly, accepting and working out the rest because you love him.
There are so many young people out there who are petrified to come out in front of their parents. Parents might be the last ones to learn. Denying the truth about their children. Denying love and support that’s is absolutely vital for those young persons to then bravely face the world on their own.
You as parents, and your family should be so proud of yourselves.
Having said this, I have no doubt how nervous and worried you must be. But I truly believe you Guys have the most important and powerful foundations to work the things out. You love and respect each other and the rest will eventually fall into right places. Your son was honest with you Guys. How about being honest with him and admitting your worries, admitting this is completely new territory for you but reassuring him about your love and support.
I really believe you’ve got this. Just give yourself some time to get used to these news. Be patient with yourself. Allow yourself to feel uncertain and be willing to work on this together.