Hi, I had a chemical pregnancy last month. We started trying again and I have today had a positive pregnancy test. I am so worried that what happend last month will happen again. I tried so hard not to test early but I could not help it! My period isnt due until Sunday/ Monday and I can feel a dull lower back ache and this is how my miscarriage started last time, although that was accompanied by really sore boobs which I do not have this time. Has anyone else had lower back ache this early on?