How can I repair the relationship with my girlfriend?

I’ve been with my girlfriend for nearly a year now, I am (M32) she’s (F31). Everything was fine up until about two months ago. She found out she was pregnant which we were very happy about. The next day, she seemed really angry with me and I asked her what was the matter. She stated that she had found out I had been looking at things online (I think everyone reading this should know what I am talking about I won’t say the word).

I’ve never been someone addicted to that stuff and I would only casually browse it here or there. Of course she was deeply upset with me and I apologised immediately for my actions. Over the next 1-2 days she kept bringing it up and wanted to know more about it. I feel the more I tried to explain myself the more I dug myself deeper. She wanted to know in particular why I had searched for one or two certain people. I told her because out of all them, I found them the most attractive.

Ever since this discovery, our relationship hasn’t been the same. I’ve done a lot of work on myself over the last two months, I’ve owned up to everything and been 100% honest and transparent with her but she keeps bringing it up and says things like “I’m not your first choice, you would pick them over me” “I’m your second option, I feel disgusting, you’ve made me feel so worthless”. She says she can never forgive me for this and and nothing I could say or do will ever change her mind.

I know that it’s only been 2 months and things are still very raw but I don’t know what I can do or say in this situation. I think throughout our relationship I have always been there for her, I’ve never swore at her, raised a hand at her, been there for her emotionally, supported her, I made this mistake but I don’t feel its something which is irredeemable.

TL;DR – Been in a relationship for 8 months, 2 months ago we found out she was pregnant, we were very happy, next day she found out I had been searching for things online, she cannot get over that and says she can never forgive me and feels second best and that I don’t really love her or want to be with her.