Giolyn,
how many weeks is usually counted from the date of your last menstrual period (LMP). that is supposed to be the 'standard'. But it works only if u have a regular standard cycle of 28days. For my case, i m regular, but my cyle is about 35days.. so that means i have to discount 1 week. ie. if i count from LMP, i should technically be 14weeks, but now i am at 13weeks.. and this dating can also be confirmed thru ultrasound around 8weeks. ie. when u are around 2months preg n u see a gynae, the ultrasound scan at that time will be most 'zun'. so if u think u are 8weeks, and u scan, but the scan shows say 7wks, then u should only be 7wks.
Hope u know what i mean. So for women who have very irregular cycles, like say 3mths then mentruate one time, they will need to rely on this ultrasound scan for the dating.
how many weeks is usually counted from the date of your last menstrual period (LMP). that is supposed to be the 'standard'. But it works only if u have a regular standard cycle of 28days. For my case, i m regular, but my cyle is about 35days.. so that means i have to discount 1 week. ie. if i count from LMP, i should technically be 14weeks, but now i am at 13weeks.. and this dating can also be confirmed thru ultrasound around 8weeks. ie. when u are around 2months preg n u see a gynae, the ultrasound scan at that time will be most 'zun'. so if u think u are 8weeks, and u scan, but the scan shows say 7wks, then u should only be 7wks.
Hope u know what i mean. So for women who have very irregular cycles, like say 3mths then mentruate one time, they will need to rely on this ultrasound scan for the dating.