Thank you for writing.
The most common cause of breast tingling is a change in hormones. Stress can change hormones so it may well be that your physical health is fine but stress/anxiety is causing this symptom.
Have you considered talking to a therapist about your anxiety or stress and how to cope? I think if you feel like this physical symptom is tearing your life down, that your coping levels in general need some help. Stress is a normal part of life but depending on the amount of stress they have , a person may need additional emotional assistance.