**Update**
I just got back from the Dr. I heard my little beans hb and Dr. said it sounds great! She thinks that there may have been a clot that was missed when they did the ultrasound but other than that being the cause of spotting, she isn't really sure. She said to try and not stress myself out (haha...easier said than done!) and to just continue getting rest. For now, I'm feeling relieved since I heard the hb and other than the spotting everything seems to be normal. This could be a long 9 months...lol!

So I will be 10 weeks tomorrow. Beginning 8w4d brown spotting started. I went to the dr and had an emergency ultrasound...everything looked fine and baby's hb was 180. They gave me a shot of Rhogam (since I'm RH negative) and said that they wanted to monitor me closely until the spotting stops and to rest in the meantime. Last Friday, since I still had the brown spotting, my dr wanted to see me again. She was able to find the hb and said that things were still looking good. Now today, I have bright red spotting...no cramps and not gushing, but bright red. I have an appointment today at 4:15. I know that it doesn't necessarily mean the worst, but it's hard to stay calm and not panic until I know for sure that everything is either ok or if there is a problem....I hate not knowing...it's driving me nutty...and the crazy hormones aren't helping!
Re: Trying not to panic...*Update
Hoping everything's ok for you!
I was spotting around the same time you were. I went in and everything was fine. This week, after using the bathroom, I had tissue/mucus the diameter of a quarter. Went in to see my ob and everything was fine.
The reason for my spotting is because my placenta is right above my cervix and there was some old blood there.
Good luck to you and your little peanut.