So I’m just anxious and I’m trying to take it Day by day but did anyone measure smaller in…

So I’m just anxious and I’m trying to take it Day by day but did anyone measure smaller in beginning? I waited till I was late to test like 3 days late and got my positive but it was super faint so off my cycle I was 6w4d the ultrasound today showed 2 small sacs no baby yet and 5w1d. I had a miscarriage last year and I was measuring behind but I was spotting every day lightly and the heart was so low. Just feel upset