Brown discharge?

I’m 5 weeks pregnant and today I just feel like crap. Im nauseous and my boobs are killing me but what is worrying me is I’m have some light cramps and brown discharge when I wipe. I was wondering if anyone else had that when they were pregnant? And I can’t “call my OB” because I don’t have insurance at the moment and I don’t have enough money for a check up. I’m currently in the process of being approved for Medicaid.