I had my last period on 8th Jan and then had a LH surge on 26th Jan so ovulation likely happened then or 27th. I got a faint positive at 9DPO (6th Feb) and have been tracking line progression. I feel really scared as had a TFMR previously so is this a chemical pregnancy as lines are not getting darker and my CB digital says 1-2 but shouldn’t it say 2-3?