Am I the only one who is super anxious!?

I am SO excited but I am SO scared and anxious at the same time. I'm so worried about miscarriage and I've never even had one before. This is my first time pregnant so I know I'm overanalyzing. But it took forever to get pregnant and I'm so afraid to lose it. My period isn't even due until Wednesday. I have light brown spotting and my nipples are slightly enlarged. How are you guys remaining calm? How can I stay positive rather than focus on possible negatives? Just feeling so hopeful and yet I'm so afraid to be broken. 😪