Believe it or not, I came on here to stalk your chart. I usually stalk them at work and I saw your temps up there yesteray. But I forgot I didn't have the link at home so I'm glad you included it. And OMG, that is a wonderul chart!!! It's perfectly textbook triphasic!! I forgot what DPO you were on but I would probably have been testing since the first day of that high temp!! Hurry up and test so you can start obsessing over those sticks!!!
And yeah, about that u/s machine, I say we do it. We just need to get someone who is trained as an u/s tech and we'll be good to go. They can train us all on how to do it correctly LOL. But if it is a cyst, I hope it clears up soon so my temps can go back to normal range. But there definitely was a thermal shift, just not as big because of the high temps earlier.
I'm still mulling over that u/s machine, too! lol I looked at them on ebay not too long ago. The only thing is, you have to do a vag u/s to be able to see anything. Dang, it would be hard to operate the keyboard while probing! lol Yes, I have played the whole scenario out in my head.......Anyway, back to the cyst....I had a major, nasty, "functional" cyst for 3 cycles. I did o on ea one, but late. I also had many + opks. I never got headaches nor nausea, but I imagine they could cause it.
I don't think you would get a thermal shift if there was no release of an egg. There isn't a corpus luteum if no egg, so no shift. But, I know for fact, you can o and have a wonderful cyst, too.
I know you enjoy a good chart stalking....check mine this cycle! I am dying to test!
http://www.fertilityfriend.com/home/184936