Question?🤔

Shermone
So my hubby and I have been trying to have a baby. I thought last month would be it I missed my period but took a test after being 6 days late and it came back negative. I still didn't get my period but then the first week of November I begin spotting from that it went on to a little blood like breakthrough bleeding and I thought it was my period however the breakthrough bleeding stopped after a day and a half but I continued spotting for the rest of the day. Lately I been nauseous...my hubby says my stomach is rounder than normal...the smell of seafood makes me sick to my stomach and I normally love the smell of seafood...I get a few lil pains around the lower part of my stomach....just trying to see what you girls think it could be?