big ((HUG))
Now, to burst your sad bubble.
If you had implantation, from looking at your chart, i'd say it was on dpo 8 (not 12). Also, you do need to be careful with what you take, but unless you're taking a LOT, it probably won't hold up to that 80%. I mean, how many women are there just in this country alone who take god knows what all, and have no clue that they are preg. Then they have perfectly healthy babies.
Sooooo.......... until af shows up (NOT!), think positive thoughts.
jess
p.s. Take the research statistics with a grain of salt, better yet, take it with a 2lb. salt lick.