Erection problem. Kindly suggest please!

Hello. I think i am having erectile dysfunction seeing the changes in my penis. I used to get normal erections seeing intimate scenes although i use to get morning erections also but since a little more than two weeks the erection activity has undergone a drastic change. I dont get morning erections now often and seeing intimate scenes also helps only a little bit. The penis errects but it is not tight as it is used to be. I dont consume any alchohol or cigrettes and also not overweighted and neither have any kind of disease as well and dont take stress at all but seeing such a change is getting on my nerve as i am not able to understand that in not even a month what happend to me all of a sudden. First i use to get full and tight erections like a boner and now its not that hard although the sperm count is good whenever i ejaculated before or after. I got married 2 weeks ago and now worried about errection. Kindly suggest please