How much of a temp drop means AF is coming?

Question

http://www.fertilityfriend.com/home/21b8d9

Yesterday my chart on FF said I was triphasic. This morning my temps dropped but still are above my coverline. I have no period symptoms, just tight achy feeling (almost like I did several sit ups) in my lower tummy all day yesterday and today. I have a short LF (12 days) and I am supposed to start tomorrow. Is there any hope left or will I probably start tomorrow?

Answer 1

If it's above the coverline, don't worry about it.  I don't want to get your hopes up, but it almost looks like you had an implantation dip on CD 8 (but it's hard to determine if that's exactly what it was).  Keep hope as long as your temps stay over the coverline, once they go under the line, AF is likely to show within 24 hours.  Good luck!  I hope this is your month!

Answer 2

I'm sorry but it really looks like AF is on the way.  Temp usually drops the day before AF starts, I would say that by tomorrow it will be below your coverline and spotting/bleeding will start.  

Of course there is always hope until AF actually starts.