Weight loss?

My husband and I have tried for a year in June to get pregnant, which hasn’t happened. We both are pretty over weight, and we’re both young (I’m 19, and he’s almost 24). I would like for us to go on a diet and start walking/running. Has anyone gotten pregnant by loosing weight ? I know we need to loose weight regardless if we get pregnant or not afterwards, but has it helped any of you to get pregnant faster? If so, how long did it take after shedding a few pounds? Thanks ladies!