Just like to add, you are only19 as you said & this is your first baby....it's completely natural to worry the way you do....I don't think it's fair other PP's are saying "you need mental health support", your worry is natural!
I didn't worry much before, yet I had people basically telling me I'm a sh!t person for basically not bothering.
On here, you are damned if you do & damned if you don't.
No matter how much you agree with people on here, they will continue to tell you what you should do....as soon as you disagree "you have mental health issues".
At the end of the day, this is your baby....your life, both are equally important, don't ever feel you are worrying too much.
Do you have support in regards to OH & family??
Also, I've been told to stop doing it but used google.....way before you even consider coming on here for advice 