Unless you're 'dangerously' obese, it'd be my thought that your common-or-garden GP won't be of much help. You'd get way more and I'd suggest better advice on this board, tbh. We wimmin are experts, living as we do in a culture surrounded by lovely and fattening, empty-calorie foodstuffs meanwhile having our value as human beings judged by our dress size.
You could expect to be told to 'join a diet club', be given some printed handout telling you the calorific values of food and be told 'to exercise more'. None of which addresses the root cause/s of why you overeat.
You need to start by being frank with yourself, such as asking yourself 'Do I really want to lose this weight, or do I just think I 'should'? Often you need that line-in-the-sand moment to spur you on. Only you know when you feel that enough is enough, this stops here.
You then need to ask yourself if you're an emotional eater- do you comfort yourself with food? If you believe that to be the case, your 'go to' advice is Paul McKenna's 'Overcoming emotional eating'. I am a greedy old bag which is why I'm overweight 
. I carelessly place food in my mouth without thinking, so I am doing PMcK's 'I Can Make You Slim' which is all about eating mindfully.
You will find advice on every type of woe (way of eating) under the sun on here plus tons of advice about how to resist temptation. There are loads of people along for each ride!
Personally I am not big on 'organised dieting' (SW, WW etc) although I readily acknowledge it has its place and has helped a lot of people. Personally I see my weight gain as my thing, my issues, requiring my solution- which also means I am relatively impervious about what other people think about me and my size! This backfires sometimes as I also have 'reverse' body-dysmorphia. I a) wasn't convinced I really was a lard arse (13 stone at 5'6" at one stage, so evidently was!) and b) still am not entirely sure I look any thinner, now at 11 stone 6 lbs! Though I'm reefing my belt in.
I am also not a fan of fad dieting as, imho, it doesn't re-educate you so the moment you stop with the cabbage soup/juicing/ beetroot juice etc, because your body and mind haven't had to recalibrate, you can easily put all the weight back on. I go 
at '7lbs in 7 days'- I can believe the figures but doubt that 7lbs will still be off 6 months hence!
BIWI low carbs which certainly seems to work and be sustainable. I salute her- she is a fount of knowledge but I know my 51 year old self well enough to know that I just wouldn't be able to sustain excluding a whole everyday food group from my diet! I go easy on the carbs, mind, and heavier on the protein that 'conventional' dieting lore would advise as the science is compelling. Also, I believe sugar is the enemy (carbs!) not fat (unless transfats etc).
The other thing you have to do is exercise. I am lucky in that I have a running machine rigged up in front of a telly so I fast/breathless walk for 2 miles/half an hour every day.
Anyway, I am not expert and am still baby-stepping (1 stone in 2 months) but I feel I'm getting there!
Let us know your thoughts!