hmm. lol. my disclaimer....im not a doctor..lol. I think it depends on exactly how stretchy it is. usually when it is real stretchy and i think clear but not positive off hand on the last part it usually means you are fertile or the most fertile. Not sure it actually means you are ovulating at that moment just that you are either about to or have. either way the CM is just right for sperm (i.e. most fertile).

If you have a library or a book store, you might go take a look at a book, i think its title is: Taking Charge of your fertility: "The definitive guide to natural birth control, pregnancy achievement, and reproductive health". I think the author is Toni Weschler. I am pretty sure that is the book I'm thinking of.

excellent book, not sure what edition you would get to look at, but my wife has it (packed or I would look up the info for you) and I have scanned through it. very informative and I believe the author talks about CM texture, color, consistency in relation to fertility.

is your CM very stretchy right now?