Period again?

Emily • First time single mum 💪 Connor 👶💙 Australian 🇦🇺

Warning TMI

Long story short: I had a baby 3 months ago, met a new guy 1 month ago so thought I best get on the pill, I’ve had one period before getting on the pill. Got my period on the 26th January - 31 January. Then starting bleeding again on Saturday 9th.

Can someone tell me why?