Weight gain

Kim • Married in august, pregnant in September ❤️ First time mommy and can't wait! Dental hygienist baking a little GIRL! 🤰🏼

I’m 20 weeks currently and for the last 3-4 weeks in a row I’ve gained 2 pounds a week. Is this normal?? I’ve only gained about 8 pounds or so since pre-pregnancy, but I thought the rule of thumb was 1lb a week. At this rate I’ll be huge! And I’m eating fairly well, not perfect, but well and not over eating most of the time. Sometimes after lunch or dinner I’m still ”starving” so I’ll eat more than id eat if I wasnt pregnant, but nothing insane. Any advice is appreciated! Thanks :)