HCG Levels

Jemma

Hi, so I'm ttc and I am 3 days late, 17DPO, so I have took multiple pregnancy tests and they are all negative but in my first pregnancy all my tests was negative until I first found out at 5 weeks pregnant and qhen I found out my line was really faint (in my first) does anyone know if I could be pregnant and not find put until around 5 weeks like my first pregnancy. Thank you