I haven't always been this way, but for the life of me, I could not tell you when this started. It has been going on for several years and is progressively getting worse. I jump at everything. I get startled when someone walks around the corner, or knocks on the office door, or when my husband clears his throat. Doesn't matter the noise or situation, I jump out of my skin and scream. Screaming like someone is attacking me. My thyroid is fine, I had it checked a few months ago. Any suggestions?