Bleeding after sex.

Brandi

So it’s been happening for a few months, but when I have sex I spot a little and then it’s like full blown period. Like a week before I’m due for it. I brought it up to my gyn and he brushed it off. But I’m starting to get concerned. There isn’t any pain. No cramping or nothing. I’ve been diagnosed with pcos, so I don’t know if that’s the cause or not. Just any experience or advice right now please?