working out due date wrong?

[number1bub]

Im not sure if im working out my due date right.

last month i had a short 21 day cycle, i normally have 28 day cycles.

Do i calculate my due date with 21 or 28 day cycle?

 

[Butterflykisses]

Hi. Calculate from date of 1st day of ur last period. This is initial due date and wen u have scan they measure baby and give u actual due date. x

 

[kanga86]

I would go with a 28 day cycle and then it can be recalculated at ur first scan. I went with my 30 day cycle and got moved 3 days ahead of what I thought, so a 28 day cycle xx