more worry

I had gone almost a week without anymore pink spotting, and then today had some more. I know the HCG levels checked out okay last time this happened, but then I read that HCG levels can continue to rise for a while at the beginning of a miscarriage. I'm really freaking out here. My ultrasound on friday can't come soon enough. I want to go to sleep for the next five and a half weeks and wake up when the first trimester is over. I can't handle the stress.