BFP ultra early CB digital then BFN?

[sugardust90]

Hi ladies
Hope you're all well.

Just looking for some advice hope I've posted on the right place!

I done a CB 6 days early digital test yesterday which came up "pregnant" (after using a couple of early Boots tests which had faint pink lines). I used urine at night after a 4 hour hold on the CB digital. Then this morning I used FMU and used my last CB early digital and it says "not pregnant". I don't have any symptoms to indicate anything is wrong e.g. bleeding. Just some cramping here and there which I assume is normal. It's been 14 years since I was last pregnant so this is all new to me again 🤣

Basically I'm just looking for advice if anyone's had the same thing happen. I'd have thought those CB early digitals would've been reliable...

Could it just be the HCG content was higher with my night time urine as opposed to FMU today?

Going by my the first day of my last period id be around 4 weeks pg.

Sorry for the essay! But any advice/reassurance I'd really appreciate x

I don't have any similar experience but I would think one false negative is more likely than multiple false positives.

I would test again in a few days.

Digital testing this early on is not reliable as each digital test has different sensitivity and is not an exact science so last night your hcg in your urine stream may have only just been enough to be detected on the digital to say pregnant and this morning was more diluted or something. On 10dp6dt I tested with first morning urine and my line was very light. Lighter then the day befores test with second morning urine. I then tested again with second morning urine and it was very dark, double what the first morning urine was so that may also be the case for you.