Weight gain

Andrea • Mon, Jul 11 • FET 4/12/16 ❄ Our snow baby was born 12/26/16 👶🏽

Soooo went in for my 4th month appt and I've gained about 1 pound in the last month 🙊😬 needless to say my doctor wants me to gain weight lol. Somehow my 1 pound has already given me stretch marks on my waist which is annoying but I guess those are my genes.

Any tips for gaining weight in a healthy way?