Mentalist Oz Pearlman revealed he was trying to guess the name of Karoline Leavitt’s baby girl – which is expected to arrive in May – before shots rang out at the White House Correspondents Dinner. “Karoline Leavitt, the press secretary, said ‘Challenge me, I’m having a baby next week.’ Can you guess what I’m naming my daughter?” Pearlman told ABC News journalist Jonathan Karl Sunday. “This was happening backstage – we were interrupted because the President walked in. I said ‘Let’s save it for when we get up on the desk.’  “I was guessing letter by letter, how many letters were in the name, and then right at the moment when you see it happen, I wrote down the name and said ‘How did I do?,’ and then I turned around.” Mentalist Oz Pearlman was trying to guess Karoline Leavitt’s baby’s name — before shots rang out at Saturday’s White House Correspondents Dinner.  Pool Before revealing the name, the headline entertainer said he was guessing a name featuring six to seven letters.…