Thank you for asking. It could be a presentation of Erectile dysfunction. But before a proper diagnosis is confirmed, a detailed account of assisted symptoms, and risk factors is needed. Stress, anxiety, and many day to day factors can also cause a problem with having erections, and still it can  be normal. The problem is when despite of having no major worries, stresses, one is facing problems with erections. I would suggest that you should consult with a sexologist for further management.