I Am Sick and Tired of Being Sick and Tired

I went to the hospital today to the Respiratory department to do a breathing test and I nearly fainted 10 times taking deep breaths and breathing out again till I couldn’t force it out no more! She is going to get my doctor to order a sleep study on me as well. Last week I did a Holter monitor for 2 days and I caught a couple of dips in my heartbeat while I was sleeping that woke me up. I don’t know what all of these tests are going to prove. That I don’t think I’ll make it to 40? I already told my husband that I won’t be going on vacation next spring with him and the kids because I am too weak my heart is too weak to fly and I just don’t think I can handle it. I think that I am nearing the end of my life.