Why am I bleeding like this???

Emily

This is my chart… my cycles aren’t super regular so ovulation is likely not accurate… however I had my normal slight brown ewcm to indicate ovulation is either happening or gearing up to happen. This is very normal to me. However today I experienced some pretty significant spotting… I know it’s possible it’s from ovulation but I’ve never had this happen before. It’s enough that I definitely need to change my underwear and wear a liner and it’s dark red with no clots…. what the heck is going on? Has anyone experienced this?