341 lbs, 21 weeks 3 days... don’t know if baby moves??

Happy Mother’s Day to all!! I hope you have had an amazing day. I was wondering if anyone is in the same weight category as me, also a first time mom, and same stage in pregnancy and haven’t “felt” baby move? I don’t know what it is supposed to feel like I have never been pregnant before this but my grandmother when I called today asked me if I have felt the baby play... I said I don’t know and she said something is wrong... I need to go in to the doctor ASAP... but I really don’t know if something is wrong or not ... I didn’t think so before she said something...