Your story sounds like one or two that I have had and have seen others go through.
It is really hard to belong to a group that is well established. I can't tell you to go or not to go. You have to weigh the odds. I have a BFF that also is experiencing the same thing. So far she has hung in there. She just doesn't go as often to the group. I thnk she needs a little interaction with others. It does help to keep our spirits up. They may change their attitudes not seeing you at the meetings all the time. It may help them. Some people tends to wonder about others when they are not present and then glad to see them when that person shows up.