In December 2005 I started doing this thing where I had to yawn all the time, and it lasted for
about 3 weeks
. The thing is, I couldn't always yawn, so it felt like I wasn't getting what I needed, then it stopped. Two months ago, the same thing happened, except I got a lot of phlegm in the back of my throat, it was hard to swallow, and I had a bunch of "little" birps that always needed to come up.