What’s going on with my period? Is this my actual period?

So my period is usually late. I’ve always been irregular. (Im not sexually active) A few days ago when it came on 9 days early, I thought my uterus was shedding because I noticed some dark blood clots...exiting out. Then the next day there was a little spotting but it was dark. These past few days there was not a regular flow, and when there was a little blood, it was all dark or blood that looked like a clot of some sort. What’s going on?