I have 3 dc. Love having them. Had fertility issues so had them late. First was ivf. Second was conceived after failed ivf attempt. Third was natural but took 2 yeRs. Am older but wanting another. Dh was shocked I got preggers 3 rd time but would love to try for 4 th but dh so careful now but didn't want vasectomy. Is this mad? Not a spring chicken but think hubby will put breaks on?