My cat lately has become less affectionate toward me. She used to greet me with purrs and head butts but now all she does is bite and scratch me. She used to be so sweet, but lately she just seems to be in her own little world. I've also noticed she doesn't sleep near my fiance and I either. Could it have anything to do with her going in heat? I'm really at a loss at what to do. Any advice would be greatly appreciated!