Hey, I can actually relate so much with you right now! 
Like yourself I am also 19 years old and I have recently pretty much a month-ish ago, discovered that I am pregnant! I literally panicked, the same as you I was so emotional and couldn't stop crying - I found it difficult telling my Mum, but she has been so good with me.
Telling my boyfriend was also scary - he reacted badly at first (though I think that was just shock), we both have good jobs - he's a manager and I work for the NHS.
Due to thinking about our futures, we considered abortion firstly, had the consultation booked, and he turned to say that he didn't want to go, he didn't want to attend that appointment at all - he said he'd rather see a midwife and think positively.. We both went and the midwife wanted to check if there was a heartbeat as I had issues with dating, she found a heartbeat and he became instantly very teary and we were both hit by the realism of it - he came to me and said I can't do an abortion - he said he'd love to have a baby and that we could make it work and be a perfect family - ever since our relationship has been so perfect! We've never been so happy, I am now 12+1 and I'll attach the scan photo, I bought a babysuit for him and a little hat for baby which says 'I love Dad' and they are so adorable! His eyes lit up so much!
I'm so in love with him and happy that I am sooo excited!! And from seeing the scan now, we are so happy we never went through an abortion, seeing little legs kicking about on the ultrasound melted our hearts.
I think personally - you do what's best for yourself, I think the importance of it all is that you're both in it together, in all honesty I couldn't do this on my own. Being with him makes this all good, he's said he's excited for me to get my bump
and he attends all appointments with me, midwife, scans, blood tests.. & is all of a sudden over protective and soppy!
You still have time for your future, I'm starting a new job after my pregnancy and am still working towards my dream career, life's just what you make it! And if you ever need someone to talk to, it would be good to get into contact, your story was pretty much my situation.
Just remember the choice is yours, and nobody should be judgemental regardless!
Naomi x