It could be hyper-vigenlene, could be paranoia or even psychosis. Either way it sounds scary to live with. Does your treatment team know about this? Maybe they can help. I went through a phase where I was so paranoid and hypervigilent that o wore sunglasses and an iPod while food shopping. I was terrified people were watching me and knew my thoughts. Once the stress in my life was removed over time the symptoms eased.