You're being monitored, so I would not worry about pre-ovulating. I always thought the EWCM was in response to high levels of estrogen, and by day 6 in a 10-day IVF cycle, I'd think you'd have a lot of estrogen in your blood.

I'm on day 6 of stims in the usual 10-day protocol. Started Ganirelex yesterday. I just had some EWCM and I wondered whether this is normal, or is it something to worry about? I've read some threads on this site about women Oing even though they're on Ganirelex.