2 Periods in 1 Month!?

Amy

✨So, my period last month was about 1 week late due to stress which is normal for me

✨It was a heavy flow for 3 days and a very very light flow for 2 days which is also normal for me

✨But 12 days later I get another medium dark red/blackish flow!

✨Started off very light and not needing period products and now it is like another period!

✨I haven't had sex and I have never taken any birth control

✨My cycle lasts between 30-40 days and is very irregular and painful

❤️What does this mean? Thank you!