I am currently 7 weeks pregnant with my 4/5 child (had a miscarriage a...

I am currently 7 weeks pregnant with my 4/5 child (had a miscarriage at 18) (got a 5 year old girl, a 4 year old boy and a 3 year old boy) and I’m seeing that things are different wit this pregnancy. Any moms that already had kids have any advice? What are the chances of carrying twins if they don’t run in my family? I crave sweet stuff and sometimes sour stuff.