I Have Been Feeling Pulsating In My Neck On Both

I have been feeling pulsating in my neck on both sides for several months now. I was a smoker and had a cat scan done along with blood work that showed no abnormalities and I also saw an ENT who examined my throat and didn't see anything that concerned him. I have been anxious and stressed over the past few months and am wondering if it could be causing this feeling. I don't have pain swallowing. It's just a throbbing of my neck on Both sides where a mans Adams apple would be. I am a 40 year old woman.