over the past year and a half i have put on 3 stone due to giving up smoking and having a baby i have tryed dieting and bought myself a gym(exercise bike, rowing machine etc) and use them everyday but don`t seem to lose weight i don`t eat chips and crap i like veg what is wrong?

As well as exercising, you need to reduce your intake of calories, although don't starve yourself completely or your metabolism may stop running, preventing it to burn off fat.
Watch what you are eating, and drink plenty of water. I have found weight watchers points system very effective for losing weight in the past - without actually attending any meetings. I managed to get a hold of the book, and used it to my own devices and have managed to lose over a stone so far. It is very flexible and does not rule out any foods.
As you are overweight to start with, you will lose weight quicker to begin with, but aim to lose around 1-2lbs per week healthily, and at this rate it will be more likely to stay off.
Cardio-vascular exercise is good for burning fat - jogging etc. But remember that muscle weighs more than fat, so certain exercises may tone you up, by turning your fat into muscle, but this will not necessarily reduce the amount you weigh.
You can buy some of the points handbooks from e-bay:
http://cgi.ebay.co.uk/Weight-Watchers-po...

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There is no 'Best exercise' no matter what people tell you
Its the effort you put into a certain workout that will have you seeing gains/losses

Weight is a dead easy sum. You are taking in more fuel than you are using therefore you are storing it as fat and are overweight. I would not recommend launching yourself into heavy physical exercise at 6 stones overweight as you can hurt yourself. The best thing to do is to go swimming. This type of exercise hits a lot more areas than some of the specific exercise machines you have mentioned and also the water will support your extra weight whilst your are reducing. Once your are nearer your normal weight then you can start pounding the road running, or doing other harder impact type exercises. So measure your calorie intake and stabalise this intake to be near enough the same everyday and do regular swimming. Start off at 3 times a week and move up to more. Hope this helps you, good luck.

This weight may not come off very quickly if you want to do it healthily.
You need to eat enough calories to sustain your current weight for at least a week, then you need to taper off to less calories slowly.
So reduce your daily calories by about 500Kcals a day each week.
Perform cardio exrcise at least for 20 mins each day and try to build up to 60 mins if possible.
Try to include some muscular strength exercises also.

EAT LIGHT FOOD FOR DINNER AND DO LOTS OF JOGGING.

Oh god they just see you all coming! Just think for a nanosecond. We are all getting fatter. There are no shortcuts.We are what we eat, but we are at least as much what we don't do. Calorie intakes in 1900 and 1950 were higher than they are now, we just don't use them up!
Eat a balanced diet with plenty of fruit and veg.
Take a healthy amount of exercise 30-40 minutes of vigorous exercise per day 4-5 days a week. I hate to think what percentage of the UK population does that 2%? 5%?
I have seen hundreds of questions with this same pattern :- I am fat, tell me where on line I can get this super diet or herbal/dangerous/illegal drug that I hear will fix it for me in 10 minutes without the need for me to get off the couch!
No fixes pal , less in more out, its the only way. When I googled loose weight I got 57,500,000 hits. Fifty-seven and a half million!!!!!!

Get your thyroid function checked! Pregnancy can disrupt the production of thyroid.
Walking is the best exercise. You can push it at a fast pace and then slow down when you feel breathless. Don't lock your knees though, you will cause joint damage. Take your mp3 player, you will find you can go for miles!
I think the recommendation is 20 mins of fast walking per day.

Walking is the best exercise you can do, and eating healthy is good but you need to moniter your portions.
Try not to eat to much bread, pasta, & rice.
Good luck, with your weight loss.