So...I started spotting about 3 days ago around 13 DPO. Took a test and got a faint positive like this

Today I am 16 DPO. The bleeding has gotten heavier and I was throwing up and diarrhea all night last night. I’m worried as this am I took a test that cake out clearly positive

I am sure I’m loosing this pregnancy, but also heard of women bleeding at the beginnings. I have a septate uterus which means I have a split, so I have heard one side can bleed the side that has no baby. Wouldn’t the tests be getting lighter if I were loosing this pregnancy?