Line progression?

Bottom test taken today (+ a FR to check if a line showed there). Top was taken yesterday. I’m 2 days late for my period. Lots of pregnancy symptoms but these lines don’t look dark enough to me. I’ve had chemicals before, but usually only when I’ve tested before my period is due.

Anyone experienced slow line progression even after period is due? Didn’t have lines this faint with my 2 successful pregnancies at this stage in my cycle so was just wondering if anyone had any experience here? Not sure whether to be hopeful or not. 🙏🏽