YAY YOU!
Welcome. I feel you. I had a miscarriage this year too (well, 2015, so last year I guess now!) And I'm 15 weeks.
For me the worry has subsided a bit. I know I'll worry the whole time (um... and probably just the rest of my life) but the first trimester worry was a real animal to overcome sometimes.
I am a bit calmer now. I was high risk in fertility care, so i was seeing the doctor every week. I was SUPER nervous about a lot of things that went with going into second tri for me (stopping my progesterone supplements, no more ultrasounds twice a month, just a very different situation) But I've found myself settling in a bit.
I talk about the baby much more than in first tri. In first tri I was always worried I'd jinx myself. Once second tri started I decided this was ridiculous. First of all, obviously being happy and talking about the baby is not going to do anything bad. Plus... I'm potentially missing out on indulging in some of the silly thoughts and fun moments of pregnancy.
I had to force myself to do it at first, but after a while I think it's helped me.
Good luck and know you're not alone!