Hello! I am recently home from the hospital following pneumothorax surgery and a new-to-me LAM diagnosis. While I was in the hospital, I received two devices -- an Acapella and a Voldyne -- that I have been using 10 minutes each, 6 times per day. Every time I use these devices, I end up with a terrible headache that I can't shake. Any tips/tricks to prevent this from happening? Thank you for your help!