HSG and your period

Melissa • TTC baby #1 since April 2014 and found out our 4th IUI was successful and we are due August 2016!

I had my HSG procedure on CD 11 and I always have a 30 day cycle. We missed our <a href="https://glowing.com/glow-fertility-program">IUI</a> procedure due to a lack of a positive OPK (although I did get blood drawn that confirmed I ovulated) so I know I am not pregnant.

My period came early today and seems more intense. Does anyone have any experience with the HSG procedure messing up their cycle or causing the following period to be more intense?