16weeks and no bump

Hey guys, I’m currently 16 and half weeks pregnant and I’ve never made it past 12 weeks before. I had my last scan at 12 weeks but I just don’t feel pregnant. I know this is my first, but apart from a bit of tummy weight I have no bump no nothing? My midwife also said I should feel some form of flutter or movement but again, I’ve felt nothing what so ever?

I’ve tried to stay as positive as possible this time with so many miscarriages but this week I’ve just not felt myself. I don’t have a scan now until 20 weeks