So I tested on Thursday with FRER and got a line. It wasn’t a super strong line but definitely a positive. Then on Sunday I tested again with FRER and got a darker line. Today I used a Walmart cheapie to see if my lines were staying dark, but I got a faint line. Is this cause for concern? Today I would 15 dpo, but having gotten a dark line on another test I’m worried that I might be losing this pregnancy.