2nd month without my period but spotted brown a week before my last scheduled peiod. still negative pregnancy test. could i still be pregnant?

Unlikely: If you did the test correctly, a month after a missed period and the test was negative, you unlikely to be pregnant. Menstrual irregularities are not uncommon and anovulatory cycles are a common cause. Visit the site given below for information. If you still have doubt, you may see your doctor for an examination and blood test. http://www.mayoclinic.org/healthy-living/getting-pregnant/in-depth/symptoms-of-pregnancy/art-20043853