Afraid.... Help!!!

So my husband and I are definitely wanting to start a family but I am overweight, for lack of better word.  I am 5foot 9 and weigh around 270 ish, give or take.  I carry a lot oft weight in my midsection, but I have some muscle undermeath too, people don't believe me at how much I weigh when I tell them, but I do!  So now to the point, I am so afraid to get pregnant, because I  so overweight, or maybe I can't even get pregnant!  I want a baby so bad but I feel like I am avoiding my window because I'm afraid it won't happen or that it won't stick or something else, my doctor has never said anything about it and said that I had regular periods and always have so it shouldn't really be a probl... Anyone else have this issue?