Really rough day

I have been spotting for 9 days now. It is generally light, but a little heavier today. Still not enough to "fill" a pad or anything, but enough to show up on my panty liner. I have had two ultrasounds since the spotting started, and the baby was fine, but no cause for the spotting was found. It is brownish-red, but not bright red and all day long. It is super draining and stressful. I constantly feel like I am miscarrying and only feel relief for a few hours after a scan. If they could just identify where the bleeding was coming from, I might feel a bit better. My next scan is on Thursday afternoon and feels years away. I have been in a foggy haze all day and struggle to think about much else. I know stress is bad for the baby, but I am finding it hard to escape because my most effective stress reduction techniques usually involve activity and I have been advised to take it easy until they are able to determine the cause for the spotting. I just feel completely stuck in total uncertainty. I have not felt like this since my dad was diagnosed with terminal cancer. This completely sucks.