Brown Discharge

Sorry for posting this picture. At 3 weeks had heavy bleeding with big blood clots, lasted for 5 days(as in like heavy menstruation). Pregnancy test result is faint positive and hcg level by blood test positive din. Sa ultrasound wala makita na embryo since sabi ni OB baka too early pa. Binigyan ako heragest pampakapit incase lumaban pa si baby, and 2 weeks bedrest. then balik ako for ultrasound next week to confirm if viable ang pregnancy since di pa sure if early miscarriage ang nangyari. Then this morning (1 week after heavy bleeding) nung nagwipe ako ng tissue after magwiwi, may brown discharge. No foul odor. Ano kaya ito? Anyone had experienced the same? Next week p kasi ang schedule ko for ultrasound and naka bedrest pa ako. Thanks sa sasagot?