Uy, brown discharge in early pregnancy can be tricky, kaya please see your OB as soon as you can, hindi kailangan mag-panic pero importante na ma-check agad, especially since 7 weeks ka pa lang. A few of my mum friends experienced spotting early on and everything turned out fine, pero kailangan talaga ng doctor's eye para ma-rule out kung ano ang cause. Wishing you all the best, mama!