Period is a month and a half late i took a test it said - im feeling werid and brown discharge started appear?

i dont know if it could be from stress or not, i had shingles last month and it went away before i missed my first period but its over a month and a half now and im starting to worry that the pregnacy test i had taken was wrong. Please someone help im driving myself crazy. i cant talk to anyone at home because my mom will kill me so if anyone has any word of wisdom please share with me i really need help!