Uy, first time mom kasi natin, super understandable na worried ka, lalo na may history ka ng miscarriage, that's a lot of emotions po. Please contact your OB right away or go to the ER if the discharge gets heavy or may cramping na, don't wait for the 2-day appointment if you feel something's not right, okay? Brown discharge in early pregnancy can mean different things, and kailangan talaga ng doctor to check since your OB already said it's not normal for you. A few of my mum friends din nag-experience ng spotting sa early weeks but iba-iba ang reasons, so hindi mo dapat i-compare sa iba. Your TVS in 2 days is good, pero kunin mo na yung peace of mind ngayon if you're really worried, that's what your OB is there for, bes. Praying for you and baby.