Hindi ka nag-iisa, mama, a few of us din sa circle ko didn't gain much in the first half, lalo na kung naturally mabilis metabolism mo or kung nag-start ka na healthy weight. But definitely worth checking with your OB kung okay lang talaga, kasi bawat pregnancy talaga naiiba, at they'll monitor kung kumukuha baby ng nutrients from you properly through ultrasound at bloodwork. Most likely okay lang, pero peace of mind talaga ang kailangan mo dito, kaya go get checked na lang!