Yes I Hooked Up With A Girl And Now She

Yes I hooked up with a girl and now she says she’s pregnant. But whe we engaged in sexual activity I pulled out (I’m not sure if she was on birth control) and when I went over to her house for her to take a test she came out of the bathroom with a cloth over the test and both hands around it and wouldn’t let me see it for the entire 3 minutes bc she said she wanted it to be a surprise...when she uncovered it it was positive, but the next day she posted a picture of herself on social media drinking red wine. Does this situation seem off enough to you where she could possibly be making it up?