Yes, fraternal twins do run in family's. But identical twins is just by chance--can happen to anyone. Kewl huh.
Pr3cious I do not know where all the responses are coming from--i got lost already!!! Lol
first--dont trust what clinic pple said. Especially if they did not do any tests or anything. She is just trying to say you are not far enough to be having all these symptoms. So possibly the flu or something!!! Everyone is different. I had symptoms within days with some of my pregnancy's and with 4 of them I knew the next morning. Just like the .Dr's say if you dont pass pregnancy test by the time missed period you are not preg--it is a lie. I had to wait until 3 weeks past missed period to get positive test results--my daughter, and daughter in law did too.
Everything is fine--dont worry.