I feel pregnant (nauseous moody dizzy hormonal in general) this would be my second baby.

My first was a stillbirth at 34 weeks, with 2xknots and 2x nuckle. He was quite the ninja in there...

Everytime i take a test it shows negative then a faint line later. Am I just testing too early? I used to have a very regular cycle but I'm still kinda regulating after donating milk for the first 4 month postpartum (I'm 5 months now) but i would be 3 weeks and 6 days. Is it a chemical pregnancy? Does the line seem lighter? The digital test comes back not pregnant but the line doesn't show until later on