Mumsical i don't think that is wht she was really asking...
It could affect your fertility OP, but it probably won't. Is your cycle regular? Sometimes when women are overweight and have PCOS, losing weight can dramatically improve fertility, but that is only the case for women with PCOS (which overweight women are more likely to have, but that doesn't mean you have it!).
If your cycle is regular that's a very good sign.
You're more likely to have certain complication during pregnancy, like gestational diabetes and high blood pressure, if you're overweight, but again, being overweight doesn't mean you will get them any more than being slim means you won't.
It sounds like you'd benefit from making some changes and trying to lose weight, it will only help in the long run. But I wouldn't be expecting it to impact on fertility without other indicators.