Erection Problem for the past few days lack of imagination

Patient: Hi, im 29 and I recently started having some erection issues , Im getting married soon and i wonder if its just the fear of performance or some other issue. I started losing some mustache hair so went online to check the reasons and it was mentioned it could be due to low testosterone levels. I continued reading articles and now for the past three days am not able to imagine and get my erectile.I am wondering if it could be sheer fear after reading the articles or is it something that could call for a doctors visit.

Symptoms: Erection problem

Doctor: