birth control and spotting

Brittany • Mother of 2 boys( 6/11/08 and 7/4/17) DH had vasectomy, IVF fresh cycle #1 BFP November 2016, Baby born Independence Day 2017, can't wait for baby #3 in a few years! 👶🏽💙❤️💙❤️
I am currently in an <a href="https://glowing.com/glow-fertility-program">IVF</a> cycle taking BC for 16 days. I got my period September 22 and started BC the 30th. I am spotting now, have any of you girls experienced this?