My docter says I'm probably not releasing an egg because I'm overwieght is this right?

Yes, it's possible... so is being underweight.

It's very possible. Being overweight can change the hormone levels in your body. If the hormone levels are off then your cycles may not work properly. Do you have irregular periods?

No I had an op last jan for abnormal cells in cervix and a d&c and that made my periods run like clockwork

Are you trying to conceive? If so, for how long? Ever been on birth control? If so, what kind and for how long?

I've been trying for almost 3 years I have a 9 and 4 year old I stopped the contraceptive injection 3 years ago I was on it for 1 year

How old are you if you don't mind me asking?