I guess I’m pregnant

I literally just took a test, I honestly expected it to be negative but to my (denial) surprise it was positive. I took two more after that and they were positive almost immediately. I’m 12 days late so I shouldn’t be super surprised but here we are. I’m only 20 and me and my boyfriend are only just starting with our adult lives. I honestly don’t even know what to think right now, I can only think about how I’m going to tell him and what his reaction is going to be.