I’m spotting/bleeding and cramping

L

I’m experiencing bleeding/spotting. It’s dark brown but a few times it’s been dark red. It doesn’t fill a pad I wear a liner. I’m on lovenox, baby aspirin and vitamine. I’m only 6.4 weeks and can’t help but to think the worse. Last week I had a early scan and ther was a hb but now I feel like there won’t be 😭😔. Has anyone experienced this and everything be ok? I’m so worried. I have a ultrasound on Thursday