Your description suggests likely anxiety disorder which can manifest in different physical and psychological forms. It is common and treatable. In some people it is situation specific and can be associated with unnecessary automatic ruminating negative thoughts and behavior too. The cause can be miltifactorial like sometimes physical health or stress related or genetic etc. For mild to moderate anxiety Cognitive Behavior therapy, practicing mindfulness along with relaxation, meditation, yoga including good lifestyle choices is sufficient. For severe cases medicine is beneficial too. Please consult a psychiatrist for comprehensive assessment and to determine appropriate treatment / counselling