Is there a way to stop the worrying without the use of any medication?

Yes: There are a # of ways to address anxiety: cognitive behavioral therapy, behavior modification, individual psychotherapy, group psychotherapy, psychotropic medications, qi gong, tai chi, acupuncture, acupressure, homeopathy, meditation, yoga, exercise program or progressive muscle relaxation. Aim for 7.5 - 8 hours of sleep/ night. Daily physical activity is optimal in a green space. Eat healthfully.

Diet and omegas: If you eat a balanced diet with protein at each meal, avoid sugar, and make sure that you take omega fatty acids it will help balance your brain chemistry. You might find that you worry less. If that doesn't work there are natural supplements that will help serotonin levels such as 5htp and theanine which will help with worry.