IUI on saturday and spotting

Maria • Tried for years, had many treatments done and many miscarriages. We now have 1 boy thanks to ivf and 1 baby boy that just came naturally. Praying for a 3rd baby that sticks anytime soon.
I had my second <a href="https://glowing.com/glow-fertility-program">IUI</a> last saturday and today i spotted a bit. 
I was just wondering if anyone has has the same and went well or if you know if it is normal or If I should keep worring.. 
Thanks for your help and support