Reasons why I thought I had my period??

MA

Was not tracking. Aug 24th Saturday swore I began my period with a red bleed, happened for 4-5 days. Tested randomly(top tests) because I was nauseous & expected clear negatives…nope. Then todays test(bottoms) they seem to be darker? But why was I bleeding like it was a period??? I never had that before with other pregnancies(alive & lost). I guess I’ll post this to the general group not sure which group is best for this post.