Former athletes and problems getting pregnant/miscarriages

Michelle • 27. Married. Trying for #1 :)
I was an athlete in college and know former teammates that have had one or two miscarriages. The rigor of college athletics is hard on the body and I've heard that athletes could be more at risk. It makes me nervous for when it comes time for my husband and I to try to have a baby in the next year or so. Anyone heard the same or are female athletes as at risk as anyone else?