I am alittle confused i have been trying to conceive for quite a while i m/c on june 07 and my a/f arrived on august 7-11 it usually lasts 5 five days before my m/c i would get af like clock work every 28 days but then i go af on September 7-11 which was three days late i got a stinking BFN. i then got my af on october 3-7 which was one day early i decided to use opk i went through two packs the first one because the lines were confusing so i got the digital one it kept on telling me i wasnt ovulating i did hpk just in case and got BFN i figure i wait until my next cycle and use the diitals again but funny enough i got my stinking af again on the 27th which it is five days early. Sorry for the long post but my question is since my cycle i guess is out of wack when is it that i should start using the opk i really dont want to lose the oppurtunity of catching my o this time. i would greatly appreciate any advice anyone has. And also for the future when period is out of wack how do i calculate when i should be o'ing. Please help