Hello everyone! I'm 6 weeks and 4 days pregnant. Yesterday I saw 3-4 d…

Hello everyone! I'm 6 weeks and 4 days pregnant. Yesterday I saw 3-4 drops of dark brown discharge with severe pain in my lower abdomen and back. I called an ambulance, they said there was a threat of miscarriage, prescribed diclofenac and dydrogesterone, and prescribed Traxana 500. At night and all day, there were brownish, moist discharge. Today I went for an ultrasound, there is heartbeat, no detachment, but still, there is brownish discharge ?