The most important part is that you listen to your body, not focus on the scale. If you are hungry, you should eat. The end. Make your choices as healthy as possible, keeping in mind that sometimes, especially in early pg when the slightest thing can set off waves of nausea, we have to eat what sounds good even if it's not the healthiest choice.
That said, I have never gotten pg at a normal weight, so my weight gain reflects that. I am tall, 5'8", but not tall enough to carry 200+ pounds pre-pg.
Twin pg: 208 pre-pg, gained 17, delivered 13lbs 12oz of babies at 38w3d weighing 225. Dropped to 175 in just under 4 weeks.
Singleton pg: 196 pre-pg (so I jumped 21 pounds between 4 weeks post-partum and 5 months post-partum when I weighed at that first visit with second pg...oops!), gained 34, delivered 8lb 10oz baby at 38w exactly weighing 230. Dropped to 200 in just under 4 weeks.
Current singleton pg: 262 pre-pg (62 pounds gained in 3+ years), current weight at 25 weeks is 240 for total loss of 22 pounds thus far. Baby measuring big for gestational age with CERTAIN dates.