Hi ,My wife Due date is calculated from her last Date time which is april 2nd and given as jan 7th 2022 But my wife usually will have 2 months period time not regular 28 days Will it make due date to extend by 1 or 2 weeks , is this need to be Intimated to doctor as they calculated the due date considering normal period time of 28days Pls Answer ,thanku in Advance