WHOOPS! Not sure how i managed that!
Anyway here it goes.
I sadly suffered a miscarriage last cycle (4 weeks ago) at 6wk+4. I got a negative pregnancy test about a week later and started trying again. I only used a cheapie strip test though, which I'm kicking myself about now.
At CD15 I got a positive OPK which was confirmed with BBT.
On Friday, which was 12 DPO, I got a BFP on a FRER and a faint squinter on a cheapie strip. Obviously delighted thinking I was being a second chance, but naturally very anxious given the previous MC. Today I am 14 DPO and took a CB digital with FMU - BFN 
I followed that up with another FRER and cheapie but got pretty much exactly the same result as 12 DPO - don't think the lines have progressed at all.
Do you think I'm having a chemical? Or is it possible that the FRER is detecting HCG from my MC?
The CB leaflet states sensitivity of 25 so should really be positive by 14 DPO shouldn't it
Will try to attach pic of both FRERs - top one is today.