Backache?

Hi I am almost 5 weeks pregnant and really have no symptoms at all. Not even breast or nipple tenderness at this point so I am really worried. I always kept a journal of my previous pregnancy and had nipple tenderness and waking up early to pee were my early signs. None of that this time
The biggest sign I have is backache. Does this mean an impending miscarriage? It aches across the middle of my back and get worse as the day goes on. Its not my lower back and I have no cramping at all.
Has anyone experienced this, please be honest I am ok with the truth. I just wish I knew what was going on.

Thank you!

I never had symptoms. The back ache may just be where you are feeling pain but I don't think it's a for sure miscarriage sign. Maybe just some stretching going on!