Worried about...

Weight gain!!!!! I am already a little on the chunky side and I dont wanna gain much more way... is there any tips and tricks you ladies can help me with so that way I can try and tame my weight the best I can please. I am 4'11 and weigh 175 .. everyone says I dont look it even the doctor but still I dont wanna get huge huge huge. Im just worried im gonna get behemoth and I will have such bad bad self esteem if that happens. Any other ladies worry about this? And what do you guys do to help not gain so much weight attached is a picture of me yesterday. I am 9 weeks.