Am I the only woman looking at porn?

Hello,

I'm having a hard time figuring out what to do. I am a 31 yr old wife and soon-to-be mother and I am realizing that maybe I struggle with porn. Until now I thought it was just this thing that I looked at once in a great while and I could choose to do it or not do it. But recently I started feeling like maybe it's a little bit more than that. Especially since it's more frequent lately. Yesterday I sat my husband down and told him about it. Of course he was wonderful, forgiving, and understanding...as he always is! We have a wonderful marriage and life. I couldn't ask for a better husband or more fulfilling marriage, so I don't understand why I do this! My husband asked me if there is anything that he can do to help me...I don't know. I feel so ashamed. I'm sad that I'm dishonoring my husband and God. I don't want this sin in my life! How do I get to the root of it?