Thanks for all the info guys!
My man has had his swimmers checked and he has high count and high motility, so that's good, at least there's not a problem with him as well as me, don't think I could cope with that!
So, looks like we'll be sticking to DTD every other day, he's starting to get so sick of me talking about ovulating, EWCM, temp taking, best positions for deep penetration etc!!
Also, is this an old wives tale, or does it hold any value? That, after intercourse, to stop all the sperm "dribbling" for want of a better/nicer word, out of you that you should stick a cushion under your bum for 10 mins post sex? 
Or were old wives just crazy with their tales? 
Can't wait til CD 28, can't resist urge to POAS again.