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@psalms119 A positive fFN in 2nd trimester doesn't give you 100% risk for preterm birth, it by itself raises your risk probability to like 7-60% or something like that. Try and take a breath, stress is another thing that could affect this if you are leaning to the PTB side. Don't hesitate to...

@adoptedwatcher "Can be" is super key here. Even at 5.5 weeks it can be hard to rule in or out, I only know because that is when I went in for an early scan to rule out ectopic and it could not be. And this was performed by a licensed tech not the dr, not the ER.