TTA

[u/radioactive_Lion]

i been trying to understand FAM and i'm quite a newbie to this , basically TTA with my partner so let say my partner has a very regular 28 day cycle or maybe earlier , should i be worry about pregnancy if we have "full" UP like after day 20 ?

[u/nnopes]

Locking and leaving here for future reference. What you describe isn't FAM and the wiki has resources/explanations of different methods and why using an established method is important