Again, how to count the days

between two periods? Is it from the end of last period to the beginning of the next?

Thanks!

所有跟帖： 

• 月经周期以来的第一天算起，知道下次月经的前一天。 -笑@笑- ♀ (59 bytes) () 12/22/2009 postreply 07:18:35

• Thanks ~~ -健康养生版主- ♀ (0 bytes) () 12/22/2009 postreply 09:18:16

• Thanks too : ) & Merry Christmas! -123*321- ♀ (0 bytes) () 12/22/2009 postreply 10:41:09

• No problem! Happy Xmas! -笑@笑- ♀ (0 bytes) () 12/22/2009 postreply 10:50:57

• 您别谢我了， 我应该谢谢你，这个版块的版主可不容易当， -笑@笑- ♀ (38 bytes) () 12/22/2009 postreply 10:48:33

• 谢谢你心很细!圣诞快乐! -健康养生版主- ♀ (0 bytes) () 12/22/2009 postreply 14:56:49