Anxiety Attack.

Charlotte
Me and my boyfriend began to get more intimate with each other last time we met. (Long distance relationship) 
He wanted to go all the way but I ended up having a massive anxiety/panic attack over the idea of losing control of my emotions as I like to have the control in my life after events that have happened. 
I know I'm ready for it and I love my boyfriend a lot. It's just the control that scares me. 
I don't know what to do as I don't know whether to bite the bullet and try to get over the anxiety or to carry on putting it off.