First things first: congratulations!!!! Next, call your doctor and discuss your concerns. Yes, you’ll gain weight, you are building a life within you and that life will eventually develop their own organs and bones while in there. That’s the miracle of the female body. Look at those wonders and the gain as positive vs before when your increase scale numbers were a result of poor eating choices. If anything, make sure you have the proper nutrition to limit the drain from your own body. Congratulations!