I have had two miscarriages in the past year i believe i may be pregnant now is there anything i can do to prevent a miscarriage?

Incompetent cervixRx: Have the OB md check the reasons that the first two miscarriages occured. If they were genetic(non-viable chromosome combinations) or structural(an easily opening cervix-incompetence). If the cervix is the problem and you make the 2nd trimester of the pregnancy then a suture can be used to hold the cervix closed.(cerclage).