Me and my wife had unprotected sex exactly 3 months ago (in April) on her 4th day of her periods. Her period continued for next 2 days.
We did urine pregnancy checks thrice and ultrasound also, all of which showed as negative. After that she had regular periods for 2 months (May and June) on time.
In third month her period is delayed by 5 days (expected period date is 14th July).
Is there still a chance of her being
pregnant? Why is her periods delayed?