Is my kitten okay?

I wasn't sure where to put this topic but my kitten has been acting strange. She's usually very clingy but now she's distancing herself and hiding away. She's not meowing as much either and she's started laying the this bed she's had for months, she usually snuggles up to me and my husband but now she won't. This morning I laid down beside her bed while she was in it and pet her just in case she was needing some love and attention and she started making these dry heaving sounds that I've never heard before. She's just acting so different and I don't know what's changed.