When you say "any" does that include Condoms? I guess as we drop the weight, our chances are conceiving are greater and also this could affect the hormonal balances of things such as the pill, but it can't affect condom's as they are not influenced by these things. So, as much as they can be a pain, if you are not wanting to get pregnant, I would suggest this.
I am hoping that losing this weight will give me a greater chance of getting pregnant, but I want to be a healthy weight before I fall pregnant x