I'm 6 weeks 4 days. Last week at 5 weeks I had some light pink spotting so I went in for some blood work. My numbers registered at 6-7 weeks. Tested again 48 hours my numbers increased but didn't quite double. The doctors office called today and want to do a ultra sound tomorrow.   I should of asked more questions while I had the office on the phone, and of course they called me after 5 pm so they wouldn't call me back. Has anyone else had something similar. Should I be worried?