I frequently text with a friend who I happen to have feelings for, and one day she actually wanted to talk over the phone. I got really nervous and tried to plan ahead what I was going to say. We were on the phone for a few hours, but there was so much silence in between short bursts of conversation. After we finished I thought I blew it and screwed things up. I felt terrible. A week later she called again, and we've been talking on the phone pretty often now.
There are a lot of awkward pauses still, but it made me realize that I was just being too hard on myself. So it may not have been as bad as you thought it was.
But yeah, I am sensitive to silence. I hate when people don't respond, I instantly think I said the wrong thing or am too boring. :[
Cover me with your hands, and make me see all I am