can someone please help! TMI warning‼️

Okay so I'm supposed to get my period in 15 days but, about two days ago old blood started to discharge from my vagina, and then the next day fresh blood came along with old blood and tons of clots came out as well. and I'm having bad cramps, today it's deep dark red blood and old blood mixed with really painful cramps. I'm hopefully going to the gyno soon but I wanted some of your guys thoughts on this. Here Is a picture of it today.