Why am I freaking out?

After several positive hpt's, I'm terrified of all the things that can go wrong. This is my first time at the rodeo, 4wks even by glow, 5wks by other apps. I've been having dark brown spotting (when wiping) on and off no real cramping to speak of. My cervix has always been sensitive, even with regular pap exams, I would have bleeding/spotting afterwards. I'm just super anxious today I guess. It's our first month of trying, so maybe I feel like it's too good to be true?