Need advice from anyone who been through this.

Hi to all mummies, this is my second time pregnancy. I had a miscarriage before due to fetus wasn't developing properly at week 7 resulting a natural miscarriage. My current one is going on perfectly but I will be taking panorama test soon to test for Down syndrome and other abnormalities. I am having phobia from 1st miscarriage that I am afraid the chorosome might be missing or having additional. Anyone has miscarriage before and has a healthy pregnancy the next one?