First off congratualtons! In regards to your question, did you ever find out what caused the first miscarriage? Did you get pregnant naturally this time around? I ask cause if you had assistance, I would think that if it was anythig to do with abnormility, they would have tested you prior and new the matureity of your egg and sperm and would think that you would have a better chance with them having the nohow upfront.
everyone is different. your 1st miscarraige could have been something from stress to someone hitting your stomache or disturbing the baby. the only possible way to ALWAYS have misscarriages is if you do not take care of yourself or have a history of something that causes miscarriages such as endometriosis.
It depends on the cause of the first miscarriage, but for most women the chance of a second miscarriage is actually LESS.
I suffered a miscarriage in November 2011. I'm now 23 weeks pregnant! Good luck to you and your baby! :)