New birth control

Story • 18 • taken • A mommy to a 2 y.o son❤️❤️
I was on the Nuvaring for a year and I just recently switched to the pill after 3 weeks of no birth control, I'm on my 3rd week of the pill, I started it in the middle of my last period, but I'm still bleeding??? Well, spotting technically. But I'm wondering how long it normally takes for the spotting to stop between your periods???