Ay, totally normal yan, mama! A lot of us experience numbness sa fingers during pregnancy kasi ng fluid retention at hormonal changes, lalo na sa second trimester, one of my friends had the same thing around 16 weeks din niya. Best to mention it sa OB mo sa next check-up para sure lang at ma-rule out kung hindi carpal tunnel syndrome, pero usually it settles on its own or with some adjustments like elevating your hands at night time.