Is this yeast infection or ovulation discharge ?

so i've been having a uterus pain most of day today and when i was in bathroom i saw this whitish chunky discharge,do you think it's from yeast infection another sti or just ovulation?

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sorry if the photo might look gross but i really need some opinions never been to gyno and very scared to go :/ edit:my ovulation date is tomorrow and this discharge doesnt have a smell or antyhing

Yes, looks exactly like ovulation discharge to me.

Ovulation dates can change as the period can.