Well got my hsg done this month and all is great. I was 3 days late when this very light bleeding started at 16 dpo after sex. Next morning i get a bit more spotting and then a few hours later i was bleeding like AF but way way less. I thought "yup here she comes" i put a pad on and went about my day. By the end of the day my pad is not even half full. Very weird because i never get spotting and when af comes, she explodes alright. What the hell is happening?!