My cycle is 38 days long. I always dry up a day or two before AF shows.

My period isnt due for 6 more days. I've had an abundant, like lots in underwear, white creamy cm. Very next day I started bleeding pinkish red watery blood. Its medium/light flow. Had more first thing getting out of bed but I assume from laying down all night.

If it is implantation bleeding, can the flow be heavier if you've recently had a baby? I'm 11.5 months postpartum, I mean not too recent but, curious if the uterus would be more sensitive after giving birth?

I tried testing 4 days ago, and tested today (second day of bleeding) and got negatives. Or two indent lines. Not sure what to think st this point.