We analysed your query with respect to only your chart, as the place of birth of wife was not provided. As per your chart, a delay is not quite evident with respect to having children and chances are quite good of you becoming a father.
You may like to go for professional medical advice as well, if deemed fit in your case.
A proper and well advised food course for keeping the body cool of the prospective mother is important along with medical advice.
Vrishabha Lagna with the Lagna lord Venus posited in the ninth house in conjunction with seventh lord Mars and Saturn; Retrograde Jupiter posited in the fourth house; Ashtakavarga score of fifth house is 24 in the natal chart and 35 in the Navamsha.