Plus size and miscarriage?

Holly

So I haven't really y been trying for a baby but in the last 7 months I've had 3 miscarriages. I'm a size 18 could this be why? Now I am ttc and I'm scared it will happen again.

Doctors can't find a medical reason why it happened but wouldn't make any comment on my weight they just kept saying your young so it wouldn't of been an issue...

If anyone has any advice or know if that's why I would be really great full