When I have an infection my discharge is always BRIGHT white, thick and bubbly. Always. Everyone is different i guess. I didn’t mean to imply you didn’t know what it was, just that it is a possibility. I was told that Yellowish discharge is usually something more serious than just a yeast infection, but I do know that some women get clumpy discharge with a yeast infection but that never has happened to me. Most of the sites do say the discharge is thick and white, though, which is why it was the first thing I though of.