Update from last night. Please read and help 💕

I posted last night about my test and that I am 15w PP and had my period on 2/24 so today I would be approximately 9DPO. This morning I took a test with a E@h and a FRER with my SMU. Is the E@H not as sensitive or are the FRERS inaccurate? Also being SMU and yesterday’s being at night would the tests be wonky because obviously a morning pee is stronger than a night pee? So maybe there wasn’t actually any progress in darkness? Maybe this is left over hormones from my resent birth in December? Would there be left over hormones even after having a period?