Could i be pregnant ?

On the 26th & 27th I took a test and was both negative, on the 26th I had some light spotting which was very light pink and only when I wiped and it continued till the 28th then stopped today I took another test which was negative again.. idk what it could be ?? Only symptoms I’ve had was eating and sleeping more than usual and some cramping in my lower abdomen.. no sore breast or nothing & my periods mostly always come when it says or earlier