Dear Dr. My wife used to have regular period till last month (only 3-4 times irregular during 2 yr marriage time). We had used condom for protection those day but Now we're moving ahead for planning and there is delay in period (approx 17days). We have been even tried pregnancy kit (Mfgr: Cipla) but results was Negative. So what would be chance of pregnancy positive or we should consult Gynecologist.