Possibly a chemical pregnancy?

Not sure if this is the right room for this but, I posted at the beginning of the week, my pregnancy tests. I believe it was 3-4 days before AF arrived. Faint blue line. I also got a faint pink. Very very faint on both. I tested again the next morning and then the next..both being negative.  AF came the first. Extremely heavy..like went through 5 super tampons in 3 hours. And that was it... My "period" only lasted that one day. Just very light brown spotting the day after. it normally lasts 5-6 days. I felt nauseous a few days before AF. That's why I tested early in the first place. I've had a miscarriage before and am hoping this possibly wasn't a chemical pregnancy but, my gut feeling just tells me otherwise. It's like I just can't get it out of my head.  Has anybody else had this same issue or any advice?