Really confused

Sorry might be long,

On Sunday u had spotting through to the Tuesday then on the Tuesday afternoon I noticed the blood get a bit heavier not like a normal period it was light pink to start and then went dark browny looking wore a pad that day just incase it was AF but now I'm completely off apart from a few spots if blood in the loo every now and again my AF usually last 4-9 days was this my AF or something else?