Oh it is so very tough after a loss. I have one baby and this is my third pregnancy. 5 weeks is still so early and most people still have such subtle symptoms then, if at all. With my DD I had to remind myself I was pregnant, except for period type twinges and sore boobs (the latter of which subsided by 6 or so weeks anyway). This time, maybe because I'd only just finished breastfeeding DD a few weeks into the new pregnancy, I had zero boob symptoms and not much of anything else. So you have no reason to worry based on symptoms or lack thereof.