Air expander discomfort

I had the saline expanders and I described them as having bricks on my chest and at night in particular it felt like someone was standing on my chest - the pressure!  Eventually I adjusted to it and my sleep was regular.  Be rest assured even though it sure is a so and so in the discomfort stakes, it is normal and you need to consider your comfort as the others have said with building a wall of pillows and taking meds for a couple of nights until you start to adjust and then sleep hopefully will come naturally.  I often wonder why people want and do get their boobs enlarged! 
Take care