Any guesses as to what this was? (Yes, I've already seen a doctor.)

The doc said that might be the case so she gave me a blood test for that as well as the thyroid one.

The trouble breathing came back again today so I think I’m going to rule out allergies, but we did discuss that the weather has really changed lately so it could possibly be something to do with that.

I did the blow-into-the-tube thingie and she said that looked ok.

She scheduled me for some pulmonary testing next week which will hopefully give us more information.

You guys have been really helpful. I appreciate it, thanks.

I go through cycles where it is often difficult for me to yawn. The cycles last for a couple months or so, and then all is well for a few more months. My breathing otherwise is fine, but I just can’t catch my breath when yawning. I’m not anemic and I have too high of a metabolism rate to be hypothyroid.