My periods around 16 days late now, and I had some spotting on tues, weds and a small bit yesturday (thurs)
Boobs are really heavy and nipples are super sensitive. Did a pregancy test a week ago and it was negative.
Also today, I'm having some really odd crampy aches... Like I'm hungry/period but not as bad.
What you reakon?
Also I should mention, I've gone super spotty lately and I NEVER get spots. My hair on my head has gone quite fine and frizzy too...

You are having symptoms that should not be there so early. So calm down you are thinking too much about being pregnant. Go to your doctor and have a proper pregnancy test.