Thanks for your replies @Nereid and @Kelly70. After a whole day yesterday of nothing more than spotting I was starting to relax and think all might be ok but this morning it definitely seems that AF is ramping up Though at 7dp5dt it does seem a bit too early still so that's the only thing giving me hope at this stage. Maybe I'm just in denial. My emotions are all over the place.
Have managed to hold off testing as the nurse said it's too early still. I didn't have pregnyl at all, I had ovidrel as my trigger but that was 14 days ago so thinking that should have left my system by now. It's so hard not knowing what's happening and so tempting to whip out a test and try to get an answer - though obviously it's risky to do so as it may not be the right answer and it may not be accurate. Anyway, I guess I'll see how today unfolds with AF. It's looking like I may already have my answer