On 7/31/09 had dnc for missed abortion no yolk. we r ttc but no result.im 34 and had on fertile days .?

i had a DNC on 7/31/09 for a missed abortion(9wks) no yolk only gestational sac. my husband and i have been trying but no result. we had on the days we were suppose too and yet nothing. im 34 and a little on the heavy side. could this cause problems? Also this menstrual cycle has been less pain full and the blood flow has decrease could this mean a "normal cycle"? anyone have any insight?