Feeling for uterus? 14 weeks pregnant

I’ve read on multiple forums that you can start to feel the top of your uterus if you lie down (and press a few inches below belly button). I’m 14+ weeks and I’m not sure if what I’m feeling is the uterus or not? (Ive never tried to feel for anything in that area before pregnancy so I really don’t know if it’s different or just always how it feels lol). It’s definitely more on the hard side, and I must be lying down completely to feel it. I’m about 140 pounds, 5’2”, and feel like I’m not really showing yet; it’s just bloat and fat there lol. My last appt was 3 weeks ago (everything looked great then) and I go again next week. It’s felt like forever and I just hope I’m developing on track and that the baby is strong and growing. What are your experiences feeling your uterus at this stage? And when will I be able to notice it/feel it when standing up? Thanks for any help or insight you can give me. I never made it this far in any pregnancy (had a MC and chemical before) and im always super nervous.