I just started back on my prenatals and also noticed the same thing...
So the only thing we have in common is the prenatals, I blame them too then.
im on prenatal, asa 81, crinone 8%, vivelle dot
Mine looks yellow which I think is from prenatals as Nicmom said.
Now that you mention it I did on my last IUI cycle but I have no idea why. What meds are you on? I was on Metformin, Prometrium, Prenatals and Baby Aspirin.
Could it be from prenatals?
I think my nurse mentioned that as a potential sign of overstimulation (or something you ate?)... Call your nurse/doctor to check with them just in case! Hope it's nothing serious!