Hay, first time mom ka talaga kaya natural ang worry mo! Numbness at tingling sa kamay especially sa isang side can happen during pregnancy dahil sa weight gain, hormones, at pressure sa nerves, maraming moms namin na nakaranas nito around 7 months, pero please mention this to your OB sa next check-up para ma-rule out ang carpal tunnel or nerve compression, basta sure kayo na okay lang. In the meantime, try to rest your hands, avoid repetitive gripping, at makipag-usap sa doctor agad if it gets worse or spread pa sa ibang areas, alam mo na safety first lagi.