Insight please!

Erica

I got a faint positive with FRER at 7DPO. Was clear as day. Had color. Showed up within one min. 8 & 9 DPO FRER tests were all negative. Is it a chemical? Too early? I’ve also been drinking a crap ton of water. Way more than normal. Could my urine just be too diluted? I’ve done FMU and other times. But I work nights and I wake up and drink water too lately.