TMI PIC

So I haven’t had a regular period since October and since I have been spot bleeding. I had a bad yeast infection but got antibiotics to take care of that. It’s near the time of the month where I should be getting my period, but like I said.. it hasn’t been normal forever and just spot constantly. I know you can get old blood but usually it’s never like this. I’ve taken pregnancy test and blood work for pregnancy test and they have came back negative. Anyone know why my discharge looks like this