question: I have had breathing problems come up in the past month & 1/2 when doing much walking & small things. I have shortness of breath where I have to breath through my mouth to get enough air. I went to a heart Dr. & he said all sounds good then he had me go to a lung Dr. that now wants to have me do a sleep test. I only had about 5 of the sleep questions in minimal & that s only because I have a bad hip that wakes me up at night. I told her this but she still wants the sleep study. I want a second opinion, am I wrong ?