Pregnant with baby number 2 and I'm worried...

Mary
Hi all. I just tested positive yesterday. I'm so exited but I've got this fear creeping in. A little back story....
I had a miscarriage about 3.5 years ago. It was one of the most difficult things to get through. I was fortunate to get pregnant about 6 months later and I have a beautiful almost 2 year old daughter. Sadly, my mom unexpectedly died 3 weeks after she was born. She was my best friend and biggest support. 
Now I'm pregnant again and so scared of miscarrying. I don't know how I would handle it without her here. I'm scared and every little twinge and cramp is freaking me out. 
I know if it does happen there is no way to stop it but that doesn't seem to make much of a difference for me. Any suggestions to help me calm down a bit or to take my mind of of things?  I could use it. :) 
And congrats to everyone!