Don't know what's going on and scared

If this is too graphic I'm sorry. Yesterday I noticed I was bleeding very heavily and having large blood clots. My period was last week and very normal for me. I know I am in my ovulation phase right now. I know I'm not pregnant. This has never happened before and I'm not sure if I should go to the er or wait to see my dr. I enclosed a pic of how big the blood clots are and I had bigger one then this in the last 24 hours. Any advice is welcome. Thank you