Hi there :-)
Good luck by the way. I hope it is a BFP.
I wasn't exactly trying to conceive and i wasnt counting days of ovulation. BUT my DH and i decided that we would start giving contraception a miss and just see if we get pg but werent fussed if it didnt happen straight away, so anyway. We got pg the first time and i noticed changes only a few days after conception. I had to go to the loo lots, i was tired, i was a little bloated etc.
Im not sure if this is how it happens to everyone or not as this is my first pregnancy, but this is what happened to me. And i just knew i was pg, i never got this with AF.