Having regular cycles to a large extent means that you are ovulating. But having Ovulation is only of the factors which determines fertility.
Next Steps
Since it has already been one and half years of marriage and you haven't conceived, it is time for you and your spouse to have a detailed fertility check. Depending on the possible cause, you will be suggested the apt fertility solution.
Health Tips
May visit this link for a better understanding of fertility solutions: http://cheqkmate.com/fertility/solutions/solutions-overview.html