G-DIABETES HELP... So confused about low blood sugar

Rachel

Diagnosed with gestational diabetes and just started monitoring my levels today. Two hours after dinner my level was 77 (which I thought was great??) and after looking online, places are saying that is on the verge of TOO LOW and that I should eat something to raise my level..... I’m new to this, my doctor didn’t explain much(just told me to track my levels) and I have no idea how all this works so can someone please explain to me 🙄😂 (posted in a GD group but no responses yet)