Am I having anxiety?

All day today I felt physical symptoms of anxiety such as feeling restless, slight chest pain, rapid heart sometimes, and an occasional nervous feeling in my chest. I have all the physical symptoms, but there’s nothing I’m really “anxious” or worrying about. It’s like all I’m feeling are the physical symptoms of anxiety without actual anxiety itself (it that makes sense) I have a history of panic attacks and I usually feel symptoms like these after an attack but I haven’t had an attack today to cause me to feel this way. This is why I’m very confused because I usually don’t feel like this randomly, it usually only happens right before or after an attack.