Emotional breakdown

Brittany • I`m 28, just got married last year to my best friend. I can't wait for our son's arrival in December 2016
I felt so bad for my husband last night. I just started crying and couldn't stop. I was finally able to sob out that it's so overwhelming for me too and I worry about everything. I had a brother pass from SIDS so I worry about that, I work with radiation (but use protection) I calmed down, then bawled again, saying it wouldn't be just us 2 again for a long time, and I'm worried about not having us time and growing apart. 
I'm sure it's the hormones surging but this is my first major breakdown. I'm almost 12w. I hope it gets better, he's been so good to me. 
Sorry had to get it out...