What is this called? I tried saying the name Roberta and it came out as *silence* followed by "Rrrrrrroberta"

What is this called? I tried saying the name Roberta and it came out as *silence* followed by "Rrrrrrroberta" It felt like I was choking and I stopped and tried again and couldn't get it out, then it come out as a long rrrrr sound before Roberta could come out. I'm 90% sure this is a block but just want to confirm.