Sorry that I jump as a community newbie in, but I could advise you the book from Toni Weschler: TCOYF

I practice this method of fertility awareness, exact name Symptothermal Method, since more than 7 1/2 years . This method works in both directions: avoiding or achieving pregnancy
german wavy - sorry for my bad english - I am still learning
from straight hair to 2a
low-poo: Alverde healing earth
CO wash: Alverde hibiscus/aloe vera condish
LI: Alverde hibiscus/aloe vera condish diluted with watter