I Think it is possible that the vagus nerve is involved, but i think you make a misstake if you only concentrate on that nerve. Because i think the hole nervesystem could be involved. I think the orgasm cause inflamation in the nervs. I have tried DHEA and dyklofenak and it helps the recovery time to be shorter. Have any one of you tried cortison? I would likte to try it but my doctor wont give it to me. For what I have read, cortison is the best way to treat inflamations.