Please Help!

Brianna • Nursing student, ADN RN 💉 Two Fur Babies. Happily Married 💍 TTC our 🌈 👶🏼

I got my BFP on Friday and went to the doctor to have it confirmed. The doctor said my levels were low and I’m afraid of this being a chemical so I’ve still been testing. The top is my test from Friday with FMU and the bottom is my test from today, Sunday, with FMU. Shouldn’t it be darker by now? Has anyone had this and still went on to have a healthy pregnancy? According to my last period I’m only five weeks and one day. I got a positive OPK on the 6th. I’m so scared.