worst daughter in the world ?

I feel like my life is over 😔 just as me and my dad were talking about our big future plans I find out I am 7 weeks pregnant . I'm only turning 17 in a couple months . I feel so bad and guilty of course this wasn't planned but  I don't know how to tell him I honestly wanna just cry but I don't want him to ask what's wrong  . My mom died years ago before I was a month old so it's just us , I'm gonna break his heart, this is the 2nd time I got pregnant my first ended in an abortion at 16 and just a year later here I am again . Yes I am on birth control so I just don't know how this happened. I have amazing grades and I'm in my last year of highschool he was so proud of me we even went to look for my first car  , I don't want a baby but my first abortion literally broke me , my mental health wasn't right for months I just don't wanna go through that pain again omg I just hate seeing him cry 😔😔 .. especially over something dealing with me I am so so disappointed in myself .. can someone give  advice please & I want honest opinions you would give a friend , child or a loved one in this situation.