How do you keep positive in the wait to 12 week scan...

We have had 2 early scans in this pregnancy due to a previous ectopic pregnancy which resulted in losing my right tube and a miscarriage. Here is our 6+4 scan which made me so relieved. Got to see the heartbeat too of 136bpm! Now we have to wait till our 12 week scan and I am so worried something will be wrong or the baby would have stopped growing! 5 weeks is just so long to wait and I’m already going crazy!