Weird peiods!

Ok, so August my period was 3 days late and was extremely light and lasted about 3 days. And then last month my period came 5 days early again extremely light but lasted 2 days. A normal period for me is usually always on time, very heavy, and lasts 5 days. Well I have 6 days until my period this month is supposed to start, but the last 2 days my boobs have been really sore and stiff and have been nauseous all week. Took a hpt today and was negative. Wishful thinking?