Could I be pregnant

My period was 5 days early and only lasted 3 days or should I say 2 days and 1/2 on the 25th of this month it was light pink and brown and on yesterday it was heavy like a normal period and this morning it was light pink and when I went to the bathroom there’s nothing on my pad and when I wipe it was light brown and pink woke up from my nap and had throw up