Early pregnancy or Period?

Hello mommas,

My SO and I have been trying for baby #2. We had sex twice in my fertile week.

My period is supposed to start at the end of the week. Yesterday I experience some brownish discharged when I wiped. Could it be implantation bleeding or just a sign my period is coming? It has stopped I haven’t had any discharge today.

I’ve been really nauseous, I was a bit sick because of it for 3 days last week. I get nauseous at times mostly in the morning. I did take a pregnancy test yesterday and came back negative.

Has anyone had this happen to them? Could there be a possibility I am pregnant and I just took the test early? Or it’s just my body playing tricks on me?

Thank you in advance.

Picture of my little one so we don’t get lost. She’ll be 2 in about 3 weeks.