Miscarried identical twins, whats the chances of getting pregnant with ID twins again someday?

I miscarried identical twins in the past, about 4 years ago at 18 weeks pregnant. I am wondering if anyone knows whats the chance of in the future ever getting pregnant with identical or feternal twins again? I have since then had one healthy little boy, but was curious what the chances of getting pregnant with another set someday. It's been 4 years and I think about it every single day and always wish I had my twins :(