Oh don't worry, you're not alone with this! A few mums I know went through the same thing around that age, and their doctors said a bit of blood in the nappy can actually be quite normal in newborns, sometimes it's just from tiny tears in the bottom or sensitivity to the formula, and it usually clears up on its own. That said, the shift from watery to dryer poop is pretty normal too as their system settles, so it might not be constipation at all.
Honestly, before switching formulas, I'd double-check with your paediatrician or GP to rule out anything else, they might want to see the nappy or check her over, just to be sure. Some mums found that sticking with the same formula while the bleeding resolved worked fine, but a few did switch to a gentler option like S-26 Gold or Similac if their baby seemed uncomfortable. The NAN Supreme Pro HA is actually a decent formula, so I wouldn't rush to change it unless the doctor suggests it. Keep an eye on whether she seems in pain or straining, and definitely get her checked out, that's the safest bet here.
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