Crazy cycles

I have always been very regular (28-30 days) with just a few exceptions. Usually my period last 5-7 days.

Last month, my period was only 4 days long. This month, it was a week early, tapered off after 6/7 days then came back full force. So now I’m on like a week and a half. I have noticed in the last day or so its more of a gel consistency than the usually blood (I use a menstrual cup so it’s easy to observe.) Also it seems to have developed an odd smell when I empty the cup.

Is this possibly something other than an extended period?