9 days late, twice negative result PT

I missed my period for 9 days, my expected period was March 5 and after 1 week I try PT then its negative and the nxt day on my 1st urine in the morning but negative. My breast is heavy like I experience of coming perido also backpain and mild headache and a vaginal discharge. Plss advice me?? Am I preganant im so worried! My period is regular