Michael Sam, the first openly gay player to be drafted by the NFL, told Good Morning America's Robin Roberts that he second guessed himself about coming out gay.

“I'm doing my job, don't you worry,” Sam responded to Roberts' question about how he's prepared for training camp, which opens Monday.

When asked, “What was going through your mind?” on draft day, Sam answered: “I was kind of second guessing myself whether maybe football turned its back on me. And I was like, 'Maybe I shouldn't have done what I did,' you know?”

“You mean coming out publicly like that?”

“Exactly. I had so many emotions going through my head and then I felt a touch over my shoulder and it was [boyfriend] Vito [Cammisano] and I was like, 'I don't care what happens.' I know I did the right thing in my heart and whatever happens happens.” (The video is embedded on this page. Visit our video library for more videos.)

(Related: Michael Sam calls boyfriend Vito Cammisano his inspiration in accepting Arthur Ashe Award.)