Should I be concerned!?

Macy

Okay this might be a lot BUT I NEED HELP!! I have never missed or been late at all for a period ever in my life, it’s always come on time. However I’ve been experiencing some symptoms of pregnancy including fatigue, dizziness, and nausea. My mom had me take a pregnancy test which was negative. Now about a week later I’m experiencing sensitive and hard nipples, as well as brown discharge/spotting. I have been on the pill for months, however I just started a new pill this month, and I’m due in a week. Are these new symptoms due to the fluctuation of hormones or ovulation? Or do you guys think it could possibly be a false negative test and I should be concerned? Please help me I’m very scared.