Worried first timer

Kayla
Hi everyone! First time mom here!  I tested positive at 14 dpo on an frer after a negative at 12 dpo on a clear blue digital. I'm worried that my lines aren't very dark. Does that matter?  I'm four weeks, three days pregnant but I'm can't get excited because I am so worried that something is wrong. Thoughts? Success stories after finding out early? Thanks!