First period after HSG test?

Katie • Katie
I had an HSG done on May 8 while being on my first round of Clomid.  My cycle is always at 28-29 days, so when my period hadnt come and pregnancy tests were negative I wondered if my period was late due to the procedure or the medication.  
On day 38 of my cycle (yesterday) AF came with full force.  Super painful with brown discharge.  Has anyone else experienced something like this?  And has your cycle gone back to normal?  Any help is appreciated 😊