Period blood colour 🤨

Kimberley

So I’ve had my period for nearly 2 weeks now and since i started it I’ve had only brown period blood. I’m on the mini pill “cerelle” and I don’t know if it’s because of the hormones in that or maybe something else but today I’m bleeding and it’s bright red blood? I really don’t get why it’s changing colour like this. I started this pill back in November and since then I’ve had two periods (this is the second one) I know it’s normal to have irregular periods on this pill but I’m not sure on the colour of the blood changing dramatically like that. Any ideas on what it could be?