Weight and TTC: Feeling really crappy.

I've always been plus size and no matter what I try or what specialists I see, I can't seem to lose the extra weight. The other day I had an appointment with a OBGYN and he said that I should just use plan B before i get pregnant because I shouldn't bring a child into the world being so fat. (Very unprofessional). Yes I weigh in at 295 lbs. Yes that's a lot of weight and I know that it can be difficult for me to conceive :( but then when I posted in one of my other groups that help women and couples ttc I got a very nasty response, when asking what I can do to boost my chances, of "Don't be such a fat fuck." I'm feeling really shitty and discouraged now and want to know if there are any other couples who have conceived or trying to conceive with weight issues :(