So this is TMI but can the mucus plug change color? I've been losing pieces of it for a little while…

So this is TMI but can the mucus plug change color? I've been losing pieces of it for a little while now and it's been yellowish clear but this morning I went to the bathroom and wipes and there was a giant glob of it like the size of a marble but it was more white then clear or yellow. Should I be concerned?