so I'm 13 days late and I tested about an hr ago and it's the 3rd test to come back negative , I've been told to wait which I am I'm not stressing over this nor am I stressed for any other reason, nor dehydrated, my routine hasn't changed but now I'm having lower back pain I can't even lay on my back without it hurting bad, and I had the exact same pain pregnant with my son... I will be going to the dr tomorrow but any suggestions or ideas?