Trouble TTC, feelin insecure...

And I think it's because I'm pretty much obese.
Im 217 pounds
 My weight goes up-and-down to 220- 208. 
A Couple months ago I was 190 pounds.
I Easily gain weight like crazy...
I think I was having a hard time trying to conceive because I am at huge and not because I'm coming off my birth control...and it scares me and makes me think that I suck at life.
When all i want is my future kid.
My husband tells me I'm fine and that maybe it's him who can't produce...doubt that.
Im feeling so depressed.
I just need a tight hug😒😞😞😣😓😢😓