Ttc after multiple losses

So me and my husband decided to start ttc last year Iv always had regular 28day period, I fell pregnant first time trying. But this turned out to be an ectopic pregnant after being neglected via the hospital I ended up being 8 weeks before it was found and I lost my right tube. It took me 6 months to fall again and I fell with my beautiful little boy everything was fine up untill my 20 week scan where we where told my baby had a lethal skeletal dysplasia and wouldn’t live, we have birth to our beautiful baby boy at 21 one weeks born sleeping. I fell pregnant quiet quickly after loosing him but at our 12 week scan we where told our little one wasn’t going to make it again as she had Edwards syndrome and I lost her at 14 weeks :( we are now currently ttc again but I know it’s going to take its time because I’m so stressed about it, I’m on the ttw and I’m symptom apotting before when it was my fertile week I was taking 3 opks a day I was never like this with my other two wondered if anyone had tips on how to stay calm during ttc