Hi so I'm never late on my cycle and this month it was 9 days late, and I took a total of 3 pregnancy test and they all came back negative.  I've been having symptoms of headaches, and mild cramping the entire time and no period in site, so I called and made a dr appt. to see about getting my HCG level checked, and today it came on, so do I need to cancel my appt.  I see people on here saying they had a period and found out they were still pregnant, so any suggestions?