Hi, it's nice to meet you. I hope you find support, friendship, and insight here.
I have had a lot of experience with anxiety, particularly GAD or free floating anxiety as one doc called it. I understand that when there is no obvious reason for anxiety that the mind will assign a cause. I'm not a professional but your experience sounds like more than or different from generalized anxiety. Have you had an evaluation or do you see a psychiatrist or therapist? This just sounds like more than generalized anxiety.