Hello Friend, Good that you are seeking a help here. Anxiety and constipation are interlinked. In ayurveda terms it due to imbalance of air energy or Vata in the body. It's basic disturbance of  movement energy below the navel region is the cause for it. This inturn causes anxiety in mind and headaches and body aches. There are simple home remedies, few self therapies or lifestyle changes can help you to overcome this problem. If interested to understand in more detail and suitable solutions, feel free to reach out to me online.