The day Af is due of course seriously - it depends - some months from 10dpo, others not till day 28 - depends how optimistic I'm feeling and whether I have any hpts in but once I start I can happily poas twice a day
I know you may not believe this, but I honestly dont POAS until the day AF is due!! Actually thats a bit of a lie, I tested one day early last month as I had such sore boobs, I started spotting about an hour later! OPKs are a different matter altogether though, I use them almost every day after AF has gone! lol.
well this month i started testing at 7 dpo, i had a shadow but nothing to say it was positive, then at 8 dpo i had a pin point faint line but negative digital then 9dpo more of a line then today 10dpo a much stronger line. all i can say is thank goodness for ebay tests or we would all be skint. i kept saying that i wasnt going to test before af was due but i was never strong enough
I don't test early either because I've been getting spotting before my AF is due for several days. Rules out implantation spotting. Plus I'm charting and I can see my temps dropping. For me I would only test early if something contrary to the "norm" for me happened. Such as not spotting!