Odd period any ideas or suggestions would be brilliant

I am having the oddest period ever!

Now day 3 and my period has only been spotting and more brown the red more only when wipe barley any on pad. where as by day 2 I always would be on heavy flow with some clots 🤦‍♀️ I don’t know what to think.

Cd 1 was normal the way it normally starts but by evening it was basically gone again! I didn’t test before spotting/period started due to me always saying I won’t test till I’m late 😂 I don’t have hormones imbalance no thyroid issues blood work was only recently done