Morning ladies...I’ve had negative opks tests up until cd17 (including evening as I knew ov was due, also had some ewcm in cd17). Cd18 was positive opks, and bbt has gone right up on cd19.
Now, do we think it’s possible that I did ov so quickly after getting a positive opk, or do we think the big rise in bbt is because I had a really dodgy tummy yesterday and had to take some immodium alongside a couple of gins 
. I thought opks were approx 24-36 hrs beforehand...