Hello,
These can be symptoms of generalised anxiety disorder. These symptoms are usually free floating i.e., it comes and go anytime. Symptoms include worries about future misfortunes, feeling "on edge", difficulty in concentrating, restless, headaches, feeling dizzy, inability to relax, sweating, increased heart beat, gastric discomfort, dry mouth etc. Few or all of these can be present. Secondary to anxiety symptoms you may develop depression,phobia etc. It can be taken care off with the help of medications and psychotherapy.
Next Steps
Consult nearby psychiatric clinic or you can consult me.