OPK Confusion =/

Hello everyone,
Ok so I have been taking OPKs for the first month and they are really confusing the hell out of me. I'm sure this is normal and has happened to alot of you guys but I am still trying to work out what it all means. Ok so heres the story:

From CD10 I have been taking OPKs, all negative.
CD22 alomst positive result, but test line still lighter than control line. Tested again in the afternoon same result.
CD23 definate positive.
CD24 another definate posotive.
CD25 (this morning) almost positive, test line just a fraction lighter than control line.

I understand that this is quite normal (I think lol) but I just want to know does this mean I have already Oed? Or am I likely Oing today? When can I say I am 1DPO? Today or tomorrow? Also AF is due in 10 days from now, will this push her back? Or will I just have a short LP? Will this hurt my chances of an implantation?
I am so confused lol =/ Any help or advise would be apriciated.
-TheNewWife

AF is due 14 days from when you O, which is usually 24-36 hours after the first positive OPK. So, you O'd CD24 or CD25. The egg can be fertilised up to 24 hours after it is released, so you are at the end of your fertile phase tonight. Get busy ;). Best of luck.