Early period??

Kiki

Ugh, been TTC for a yr and a half. Had an HSG before last cycle, hoping it cleared any blockage in my tubes. We did the deed on several occasions afterwards. I have physically felt great... then today 7 days before AF I'm started bleeding... and it's fairly heavy, I hope it stops soon and it's a good sign.. but idk, what to think!

Anyone experience an unexpected flow? What could this be? A Cyst?