Mucus plug at 26w??

Kit

Definitely just had a chunk come out. About the size of a dime. Unmistakably at least a piece of mucus plug. I know it regenerates but didn't think it was normal for chunks to come out this early? My last apt at 24 was all good and I havent had so much as a single Braxton Hicks.

Had to leave a message for my doc.

Trying not to be worried but any advice or experiences would be greatly appreciated