HCg level of 7, pregnant??

My husband and I have been TTC for a few months now. My cycles are usually around 40-42 days apart ; however I am now on day 48 with Aunt Flo being a no show. I went to the Dr. but the urine pregnancy results were negative but my blood hCg results came back a little above 7. They want me to retest in a few days but could this be a super early pregnancy?? Also, not sure when I ovulate since my cycles are so long. Any help would be appreciated !!