Lower back aching along with abdominal cramps

ebulger

I have posted once before on this subject but it doesn't seem to be getting any better. I have had a miscarriage once before so I have been on edge since I found out I was pregnant a week ago. I am 6 days past my missed period and have been to the dr and gotten blood work done. My HCG levels are on track so there is nothing to worry about there. However, I have had relentless cramps. It isn't near as bad as my normal period cramps but nonetheless still annoying. The most concerning part of it is that my lower back won't quit aching. Hoping that this is normal any ideas?