I am 48 years & wife ages 33. We have a child after 3 years of marriage without any medicines. I have a problem relating to semen (low speed, I don't know exact word) for this taking medicine for 2 months earlier. Now both we are diabetic and we need a second baby. For this as per direction of doctor started folic acid tab, insulin. But 3 months already passed. No sign conception. Her last period starts on 28th of april. Present days started on 27th may. Let me know the possible date of ovulation and advice is it necessary to consult a doctor for infertility.