Sharp pain around belly button area

Hi mummies, I’m currently 17 weeks preg & realised that I’ve sharp pains near my belly button area that last 1-2 seconds especially when: - I sat down after brisk walked - walking after a super heavy meal (over eat?) - and also bending down when my tummy still feels extremely tight / full from the heavy meal May I know if this is normal & if anyone knows the cause of it? I have emailed my gynae but he can’t really identify as well due to non-specific area of the sharp pain other than suspecting tummy/gall bladder issues 🤔🫠 #firstbaby #pregnancy #pleasehelp thank you!