Clomid/ cycle day help

Andrea
I had an hsg last month and pretty sure it messed with my cycle. I'm normally a reliable 29 day cycle but I'm on day 39 now. I've had some light bloody discharge for 3 days but no AF. I even had a blood test to confirm I wasn't pregnant. 
I'm supposed to be starting Clomid on day 5 though but I don't know if that's the same if my cycle is all jacked up and if my period has even technically started. Should I take it in 2 days or keep waiting?