IUI on saturday and spotting

Maria • 5 mc in 4 years. After 6 IVF cycles one beautiful healthy baby boy 👶🏼 2 mc since baby and trying IVF again
I had my second IUI 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