Can I Ovulate Within 12 Hours Of An HCG Trigger, And Is Creamy White Discharge A Sign Of Ovulation?

Hi..I have 2 eggs in this month using stimulated injection..one egg ruptured using HCG..another one is in 20*21 mm..again they injected HCG..with in 12hrs after taking HCG I got little creamy white discharge..is it ovulation discharge? Within 12 hrs of trigger shot can I ovulate? When should I intercourse??