My mind keeps wandering

So just got my BFP last night and we are over the moon and still in total disbelief! Still waiting for it to sink in 😁 but now I'm realizing how quickly my mind is going to all of the what ifs and things that could go wrong especially duri g these first 12 weeks. Anyone else struggling with this? Any suggestions on how to focus more on the excitement than the what ifs of something going wrong? I've just heard so many stories and I'm so nervous... But I want to focus on being excited!!