I had something happen alot like that only with no current.It was my first dive in cold water.My jacket style bc put the the squeeze on me and had a hard time breathing on a long surface swim.I look back now on it and most of the problem was me.I just went to a dive rite transpack and wing.It was the best thing I ever did.Also if I found myself that far from the boat in a current I would signal the boat to come get me.Dive Safe.