Having twins!!

Found out I was pregnant with our first baby on January 19th! This past Friday found out we are not only blessed with one baby, but now we are having twins!!!!! I am 8 weeks pregnant, we are so excited but slightly freaking out with all the things we need to do and prepare for ! Any other moms of twins out there that can give me words of advice ? Also some calming words my biggest fear was always a miscarriage and now my fear is possibly loosing one twin. I've never had a miscarriage but I'm a overthinker and seem to get myself worried for no reason.