Almost Free, gosh, I am so sorry to hear you feel a shunned, and of all places at a church. Did you change faiths or is this the same denomination you have always been when you lived up north? I have moved quite a bit, mostly in the south and in some places if you aren't from that town, people don't want to have anything to do with you. You are an outsider. I've found in larger places where the population is more transient, people are more used to "strangers" and are friendlier. I can't say that is always true, just my experience. In some little towns, people are born there, stay there and are still friends with the school mates. They have no interest in "outsiders."
Also, something new to me is that some faiths don't like to talk about illnesses. They say "I have diabetes but I don't claim it". Being raised Catholic, I had to read up on what that meant.
I've also found that it can take a long time to make friends. Have you tried a support group or volunteering a little or taking a class in something?? Give it some time.
I don't talk much about my illnesses either until I feel comfortable and know people better. It's just my silly pride and I am a very private person. So, they aren't friendly with you but they sure want to put you to work?? Find another church!
Is this a real small town in Florida???