Wa'alaikum assalam sis! Jangan risau dulu, this happened to a couple of my mum friends jugak, and some of them kantung grew with baby later on. But honestly, situation macam ni kena follow up dengan doctor je, sebab timing benda ni very important and personal to each pregnancy. Go for that 2-week scan as planned, and if you're worried or bleeding heavily before that, jangan tunggu, go to the clinic or hospital immediately, okay? Stay strong, and remember you're not alone in this. Sending you all the strength.