BROWN DISCHARGE AT 7 WEEKS

May same situation ba dito sa akin? 7 weeks ako but kagabi may limabas na light brown discharge sa undies ko. I asked my sister about it (she's a nurse) kung ano meaning neto, and she told me that it's normal as long as hindi dugo yung lumalabas. Ask ko lang kung sino may experience ng ganito at ano daw sabi ng OB? Do I have something to worry about? Mamaya 11 pa kasi yung appointment ko for OB ? PLS help