Trouble with breathing

I have been having some very intense session lately with
my helix or/and MGX classic. However I feel that my breathing is holding me
back from something even better. So I was looking for some tips or tricks that
others might use. I'll just go over a normal session for myself.

I take a nice hot
shower and get cleaned up. Next I Insert
some lube and one of my toys. I then lay
on my bed spread eagle or with my hands at my side. I start off with slow deep
breaths, trying to stay relaxed. Then I
start to get a warming feeling in my lower body that spreads throughout my body,
and can get a really intense like a floating feeling. This leads to what feels
like contractions starting and sometimes I will get a very intense erection
with my penis bobbing up and down, light pre-cum and a feeling like I might
ejaculate, however that has never happened.

Now this where the problem starts.(great problem to have
btw) My body start to get waves of
pleasure and I start breathing rapidly and even light shaking. It feels so good
I can't maintain my breathing and I end up losing the "wave" of pleasure.
The contractions also stop here and I have to start all over. If I am lucky I
can make this happen one or two more times but it take a while.

Has anyone else experienced anything like this?