Pregnancy: First Trimester Community

OK, so I will be ten weeks this weekend, I am super excited for my embryo to reach fetus status. However, I also find myself becoming more and more deeply paranoid. This is my first pregnancy so I find myself doing a lot of research about pregnancy, but I'm starting to wonder if I should just turn off my internet. There is SOOOOO much scary stuff I'm learning about. I wish I could fast forward to the day I can hold my baby in my arms!!! Especially with being in the first trimester, I'm finding myself in almost a constant panic with all the miscarriage information I have read and how it's most common in the first trimester. Then just recently, I learned what a silent or missed miscarriage is. OMG!!!! Apparently, some women (although this is rare) can experience a miscarriage without any symptoms, even after a heartbeat is detected, and this type of miscarriage usually happens within the first twelve weeks. Sometimes your body still thinks you're pregnant so you can still have pregnancy symptoms, but in some women the only symptom of a silent miscarriage is the loss of pregnancy symptoms. I had my first ultra sound at 5 weeks, 6 days, to make sure I wasn't having an ectopic pregnancy, and all was normal, and there was a heartbeat, 118 bmp. I had a blood test the following week and my hormone levels were increasing and I haven't had any issues so I haven't been stressing all that much. Up until now I was considering myself lucky to not be experiencing any bad pregnancy symptoms (no morning sickness, just can't stand the smell of chicken, and have mild cramps every now and then, and peeing comically often). My next appointment (my first with my ob/gyn) is at week 12, on May 24th and it just can't come fast enough, now I'm paranoid I could have a silent miscarriage and I wouldn't notice because my pregnancy symptoms are so mild I probably wouldn't notice the loss of them. My mom works in the E.R as a charge nurse and I know they have an ultra sound machine on the same floor- I asked her if she could have someone to teach me how to use it so I could just maybe go in and listen to my baby's heartbeat whenever I wanted, to calm my nerves — she laughed at me- guess that wasn't a realistic idea- so any advice on how I can calm my nerves during this incredibly nerve wrecking time?