husband's ultimatum

Heather
Been together 10 years, I've never been considered skinny and he is. But I'm not obese either. I am 5'6 and currently weight 195lbs. BMI is 31. After all the usual tests to see why we aren't pregnant and fixing the issues and having a child becomes more realistic husband says he wants to wait. Reason... he says I'm not skinny enough. Throughout the argument is it set that he expects me to weight 130 with BMI of 21 before he's ok with me getting pregnant. And in the mean time to go back to birth control. Having a really hard time with going back to not trying after 4 years of trying and just now this week having the infertility issues fixed and him changing his mind. I currently attend crossfit and on a low calorie diet (under 800 a day) and have lost 17 lbs since I started this in September. I know I'm not losing weight fast but I am working on it. He says I need to work more. Out of new ideas for weight loss with out completely not eating. Any ideas would be great!