Help! My AF is on day NINE!

I usually have longerish periods but after a week it's barely even a dot left too see. Although my periods have been very light the last two months they came on time. (Although my cycle kept changing after depro shot last year and a MC in October) but as far as I knew by December it was on time 28 days lasted for about 6 days then my January AF on time but so much lighter than normal lasted for about a week but now I'm on day nine of this AF and it just doesn't seem like it's changing. It's not like soaking myself in blood or anything but it's thickish dark looking when I wipe on on the tampon. And during this entire time I've had a yeast infection on and off. Has this ever happen to anyone else ? Just need some thoughts im on my way to the doctors but just wanted to see if this happen to anyone else.