Blahhhh

Ok, so I started my period the 29th of November .. I was 1 day late. Now it’s my ovulation week and I’ve been super nauseated this week. Like it’s waking me up in the middle of the night.. but i’m not throwing up. I’m super hungry in the morning but not hungry at all during the day. Could I possibly be pregnant?? I took a test yesterday but it was negative...