Terrified

So I’m 9 weeks as of today, I have my ultrasound scheduled for the 5th of Dec. we’re so excited to be expecting baby #2, however I must admit that I’m terrified that I could have a missed or “silent” miscarriage. I want to be as excited as he is, but I’m constantly worried. I know they say they are rare, and the rate is only 1%. I’ve had morning sickness, almost feeling like a hangover, although I have vomited only 2x (once being this morning), my breasts have been so tender up until about 4 days ago, now they’re manageable, my constant fatigue is still here. I just read things on the internet and of course scared myself, and I feel like I won’t have any sort of relief until the 5th. Am I crazy, or is this a normal fear?