Needing advice please.

Asia H

Please give me your advice. I am 6wks5days pregnant. I had sex last night around 12 am. Right after I had used the bathroom and no blood. when I woke up for work this morning at 5:45 am and went to the bathroom the tissue was filled with dark red blood. Every since I've been having this spotting in the pictures. Could this be a miscarriage or just after sex bleeding?