Weight gain

Heidi • Married to the love of my life expecting our first little bundle of joy July 2016!
Is anyone else gaining a lot of weight? I'm struggling I was always so petite weighing at about 105 after I got married I went up to 120 which was perfect then I got pregnant I was 123 and now I'm about 174 last time I weighed myself I gained like 52 pounds. Midwife kinda got me worried saying I'm going to have a hard labor and might end up with a c section 😞