I don’t have much experience with these tests. I just got them with my OPKs and have read mixed reviews. I took one at 10dpo and it was blatantly negative. This one looks like there is a faint line but I thought it’d be darker by now at 14dpo. With my first baby I took only one first response test at 15dpo that turned super dark immediately after I peed on it. Should I take a first response? Does anyone have experience with these HPTs? Thanks!