No, what you felt is not a special sign of anything. It's just one of those things that can happen to us under certain special circumstances in our lives, and at the most it is something that God uses to jog us a little and get us thinking about the realities of our faith and our life.

If your experience of Christ during your retreat (by experience I mean not so much things like you describe in your message as the experience of faith, those times when you get the grace to really wake up to all he has done for you and it hits you more clearly than ever) has led you to take a new look at your life and consider that he might be asking something special from you in response to his love and in order to bring that love to others, then you should take it a step further.

Maybe this experience you had has gotten you to ask some questions, but the answer to these questions is not going to be in the experience itself but on much more solid bases that your faith and your reason are going to provide for you. So talk it over with some priest you know and trust.

God bless,