Help please!

I started to feel nauseous and boobs bigger and stuff...once i woke up at 5am just to throw up recently. I thought i was pregnant, so I took a test came back very very faint line. Then 2 days after, I got my 'period'...for 2 days and it was heavy then got very light then stopped suddenly. Whenever I eat, i still get nauseated and my head starts to hurt. Could that period thing been implantation and I'm pregnant? My boobs still big and I'm getting nauseated and moody as hell....what do yall think?