pregnancy after a loss. how do I relax?

Znb • Ttc after MMC in May.
I'm pregnant after I had a missed miscarriage at 11 weeks. I'm so nervous! How do I relax? Sometimes I'm fine and I forget about it other times I become so stressed I can't  function especially since I'm approaching the same week my baby passed away (8weeks) 
. If my symptoms disappear for an hour I go crazy! I'm also very scared because this pregnancy hasn't been very different from my first pregnancy except the morning sickness this time started at 4 weeks and a little worse than in my first pregnancy which started at 6 weeks and it was not that bad. Please share your positive stories of your rainbow babies as they help me relax a little.