hi, it is possible without another impairment of other class to get pregnant, according to normal ovarian cycle one month an ovary produces one ovum, then next month the opposite ovary produces it ovum, so in theory now your wife have one possibility every two ovarian cycle of get pregnat, there are apps that stimate fertile days, i recommend that make sure there are no factors that propicen an ectopic pregnancy, to be a little patient, and try fertile days, then get followed by a physician. Patienty because alternating Ovulation does not always happen