I didn't temp or use OPKS .. Had EWCM cd 13-15 .. Strong pain on my lower abdomen CD 15 so thinking I was only 6 dpo didn't expect to see anything .. I took an IC in the morning and didn't see a line .. Maybe if I reeeeally squint but then I tested with afternoon/evening urine because with my previous pregnancies I always tested better at night and this shadowy line came up !