who am I?

Have you ever had situations where you really wondered who you have become? I have always enjoyed people, I still do enjoy people, but only a couple at a time. I have found myself over the past couple years becoming increasingly more anxious when I am expected to be social around large groups of people. Church has become an extreme challenge as I feel expected to connect and socialize with so many people in a short amount of time. I enjoy one on one interactions in a quiet setting, or even two to four people, but beyond that I start to feel extremely anxious. I wasn't ever this way before and it is fascinating to me why I now feel very overwhelmed by large groups of people.