21 dpo, vvvfl or chemical?

McKenna

I got at least 4 positives then my period started...got a few more positives and we're actually darker, then yesterday it was completely negative, as well as the one at the doctor's office...My period was also only 3 days, but had 2 days of spotting which is very strange for me...no cramps, no nothing except tingly nipples. I knew something was off when my temp dipped .05 below my coverline at 14dpo...now I swear I see a faint line at 21dpo...! idk what to think anymore. this test was also taken after 30 mins of hold my urine and I had also drunk a lot the first time i peed, so I thought there'd be more urine left but not so much actually. I barely peed on it. just enough to soak it.