Well I didn't get a +ive till 13DPO with both DD2 and this baby so dont discount the possibilty yet.

Didn't want to add this but some women have triphasic charts without pregnancy so triphasic really isn't an indicator of pregnancy.........Saying that tho, both my DD's and this baby had triphasic charts the month I fell pg.

Are you looking at many other fertility indicators? Like cervix? I did for this last baby and found that if I was preg my cervix is quite high during the luteal phase but if I wasn't it went quite low till just before AF came.

Best of luck, its wonderful weather here hey

Cheers,

Beck