Alice,
Sorry for my bad English, I have read again and see grammar mistakes…
I hope I will be understandable.
a) It’s possible. One allowed the conception of my child, but it is not the same thing!
b) Taking Basal Body Temperature need to have some regular sleep rythm. I have read in a thesis that’s it’s better with at least 6 hours. (Dc Céline Lavaste-Gautier, sorry I don’t see this thesis avaible online anymore )
But I am not sure it’s a strict consensus. Some nurses with cut use STM with success.
What it is important is to have the same wake up time (with a gap of less than 1 hours) all days of Temperature charting.
If we occasionally go to bed late, It will be seen, or could be seen on the temperature result. For myself, the temperature will be higher than it should be if I go to bed at 2 am. In this case, their is the solution of not counting this point in the calculation. And leave a note in the chart.
And aking temperature is only helpfull when the woman is cycling again.
And yes, It will not be easy with a child, at least in the first mouths with exhaustion and sleepless nights. In fact It could even be impossible.
I have tried at less than two mouths postpartum, on insistance of my NFP instructor because of a bleeding and gave up. We choose abstinence.
So temperature is not ideal when the baby rises many times a mouth.
BUT we have solutions :
- the easiest is LAM, which prevent pregnancy with 98% of effectiveness, according World Health Organization: http://srhr.org/postpartumfp/methods/lactational-amenorrhea-method/
- to breastfeed exclusively directly at breasts with at least 6 feedings /24 h (4 hours max between to feedings the day, and 6 max the night)
- not have a period yet
- not bottle, no solid food, no water. Just milk.
- baby with less than 6 mouths.
Those conditions are easy to respect when the mother is never separated with baby, sleep in the same room. Of course, some babies (very few) have less feedings than this schedule.
- Cervical mucus (and cervix, if wanted).
Thoses observations are not dependants on hours.
http://www.nfpandmore.org/nfphowto.shtml
http://www.nfpandmore.org/Chart.pdf (it is the charts I use. It’s not ideal, but not found something else)
http://www.nfp-online.de/ (I have found that for Sensiplan, through a French link. But I don’t Know if it is a good link, or even a good method I don’t read German!)
