Need some help 😶

My periods have been in a very regular schedule the past year and a half up until about maybe 4 months ago. I was 45 days late on my period and finally started BUT I've been on my period for a week and 5 days now and the past 2 or 3 days it's been super heavy and I've had blood clots, and my cramps have been worse than they usually are. Any advice on why this is happening? ☹️