missed miscarriage at 12-14 weeks?

how likely is it? i had a missed miscarriage a year ago at 5 weeks 5 days, with my daughter who is now 3 I was already showing and feeling flutters nothing is happening i mean i don't have pain or blood but i felt perfectly fine when I had a missed miscarriage too im just stressing. I just hope my baby is okay ugh. I've already had 4 sonograms and heard HB im just nervous every week