Overweight

Erica • Married with two beautiful boys. Trying to loose the weight and not get prego at this time.
I am clearly over weight for a 5'4 woman at almost age 30. My weight according to the Drs and exams for police etc should be 140-150 max. Well I weigh about 50 more pounds than that. Trying to lose weight at the same time as getting pregnant. And to be honest I feel like a total beached whale trying to have sex and do positions like we used to. My husband doesn't care, but I sure do. Can I have both? Lose weight and still be able to get prego without gaining a lot of weight during pregnancy??