Have you lost weight and got pregnant??

I am obese and am having trouble conceiving. I had a chemical pg back in March of this year and we are now on month twelve of ttc and nothing. My bmi is 39 and I know that being overweight can cause fertility issues. I do want to mention though that 1. I have extremely regular periods. and 2. I do not have pcos. Could losing weight help boost my chances of conceiving? Have any of you lost weight and got pregnant after struggling? What are some tips to start losing weight? Please, any advice would be extremely helpful.